DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
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September 2, 2023: Thank you Hi Joerg I just want to say thank you for making and maintaining the Datamath Calculator Museum. I'm a recent high-school grad and have picked up the hobby of calculators and have a collection of my own. Your website has been a great resource for me, to find what calculators I would like to own and use and also to just see the wide variety of TI calculators. Thank you Ethan |
December 8, 2020: PC-100C cradle Dear Joerg Congratulations to your wonderful website! May I have a question regarding TI PC-100C cradle?... Thank you for your support and comments. Petr |
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December 22, 2016: Texas Instruments TL-30 Galaxy calculator Hi John Found your details on the web after googling my Texas instruments Not sure if you are interested but:- Now had it over 30 years. Used fairly regularly, still sits on my desk fully functional and interestingly still on the original battery! Campbell |
November 18, 2016: I have a TI 1100 II calculator If your still out there Joe... I just changed my battery this month (November 2016) for the first time that I can remember, since purchasing it back in the day. Daniel (73 yrs old) |
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September 21, 2015: Texas SC-10p class="style4"> Hello, Joerg, I have just acquired one of these machines, and I have an information concerning the batteries.
It uses 2 x LR-43 type as indicated in the back cover. Your site is great, with a lot of information. Thank you for sharing. You may like to correct the battery type information on your model information here: http://www.datamath.org/Sci/Modern/SC-10.htm Best Regards, Jose |
August 8, 2015: Programmer Hi Jörg, Ich hab einen sehr alten Programmer (LTA4877) mit dem Za0675 chip. Vielleicht ist das noch interessant für deine ic Liste. Danke für die informative Seite. Ich betreibe den nun aber mit einem 9v-Block. Im standby verbraucht der nur 19 Mikro Ampere - das reicht für 7 Jahre. Benutzt wird er ja immer nur kurz. Mir gefällt der "Bildschirmschoner" ) Gruß Christian |
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August 4, 2015: TI-78p class="style4"> Joerg, Good news, the TI-78 works! Had to use power supply as the BP-78 is missing. Might you have one? Serial number is 2000479B Ken |
June 22, 2015: TI 58C Trying to fire up my old calculator for both museum and practical purposes, thank you for a great online resource! Best wishes, Keith Montreal, Canada |
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June 1, 2015: CANON LE-10p class="style4"> Great web site. I was a Canon USA Dealer then and received my first LE-10 for demo in late 1971. As I recall and my records seem to substantiate, the Canon suggested retail price was to be $395.00, which was later reduced to $295.00 by Canon. I still have my first one and it works as good today as it did the day I got it. The first ones came with only the 4 AA battery holders. The rechargeable battery and charger was not available right away in the US. FYI Thanks, E. T. |
May 31, 2015: Texas Instruments TI-30 III Hi Came across your website when trying to work out when I bought my Texas Instruments TI-30 III. Great site. My wife doesn't believe me but the battery is original and it still works. This calculator got me through school, sixth form and then university followed by two post graduate exams a few years ago. Best wishes Jon M UK |
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May 26, 2015: TI-55 II Hi Joerg, I was looking for information on my TI-55 II and found your awesome website! I thought that I would share some info and a couple pictures of the TI-55 II that I recently bought on Ebay. I just bought it for fun, since I had one of these calculators in the 80's and loved it - until I spilled a can of Coke on it and the keys became forever sticky. I replaced that one with a 1991 TI-35X, which I've been using since then, but I thought it would be fun to go back to a TI-55 II since I liked the tilted display better. Anyway, this one from Ebay is marked as a TI-55 II (with no dash) and on the back shows "Assembled in Taiwan" and has a date code of C-0185 and a serial number of 0099748. Would this be considered "rare" ? I'd love to know anything interesting that you can share about it. Thanks so much. PS: I also had a TI-66 before I bought my original TI-55 II but had lots of trouble with the keyboard and finally tossed it. -- Rick |
May 4, 2015: Datamath website Hi,
I notice the site is quite old, are you still active with the site? I designed production test equipment for almost all TI consumer calculators. Whe the consumer products division was formed, Consumer, Business, and Scientific calculators were brought together. Lubbock was the primary manufacturing center for TI consumer products in the US. I left the Consumer Products Division and joined the TI Corporate Engineering Center. Most of my work was still with calculators. I designed the magnetic card writer for mass producing magnetic cards for the TI59. I also designed the production CROM tester. When I was in CEC I designed the software development system used for CROMs. The first time we used it was for the Harrier CROM, which you talked about in your article. I have a good story about that if you are interested. Thanks for the site, I enjoyed it, George |
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April 18, 2015: TI-2500 Datamath V2 Made In Italy Hello Jörg, I´m young Estonian vintage collector and i´ve been visiting your site for some month and i thank you for this fantastic work. Today i got my own TI-2500 datamath and this thing is super awesome,but i noticed that you don´t have it on your site. It´s Version 2 Datamath,sticker in the backside is similar to Spanish made V2,but it has written "Made In Italy" down below in left. Or you have it already up in Datamath museum ? Keep up the good work and sincerely, Valter |
April 8, 2015: TI-81 without back-up battery Dear Mr. Joerg, I saw your question on the datamath website about Texas Instruments calculators type TI-81 without back-up battery. I recently got such a calculator and I was surprised to see, that the back-up battery compartiment was closed by a rectangular piece of blue opaque plastic sheet with self-adhesive glue. I carefully removed the plastic sheet and saw the battery-compartiment but without any contact strips. Now I read from your website, that this is normal for certain series.
Here is de ROM version: 1.6k Best Regards, Jaap |
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March 25, 2015: TI 2800 Paperless Printer Thanks for the pdf manual. Had this in my drawer for years and decided to put in some batteries and take it for a spin. Bought it in the late 80's or early 90's. Sent it in for repair in 94 (TI Repair Stickers still on back.) Could not remember battery size. I always enjoyed using it, it was the only one of its kind. Perfect for business calculations involving pricing and discounts. Thank you... Michael |
March 21, 2015: Toshiba LC-847 Solar Calculator Dear Joerg Woerner, I was doing some research on this calculator and I found your web site. I have this original calculator with me that I bought in 1981 or 1982, but more likely in 1982. I have the original 9-page manual printed in Japan. The calculator still works fine. The carrying case is still in excellent condition without any kind of cracks. It has developed a tiny black mole on the display screen on the far left, but it does not interfere with the displayed digits. Since I hardly use it anymore, the digits do not show completely solid because it needs to see the direct sun light for few minutes to charge its battery. Then it works beautifully. Attached are two photographs that I took today to demonstrate today's date March 21, 2015 (3212015). I just added one extra 5 to make 8-digit display. Please feel free to add this to your web site. Regards Tarlochan |
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March 7, 2015: Mega-Danke!p class="style4"> Hallo Joerg! Im Zuge des RCL 59 - Emulators für das iPhone, bin ich bei Dir mal wieder auf die Seite. Habe auch dem Autor Deine Seite weitergeleitet. Ist ja der Wahnsinn!!!!! Du hast ja auch alle Module bei Dir auf der Seite!!!!!!!! Hammer! Freu!!!!!! :-)))))))))))))))))))))))) Ich wollte für meinen 58C immer das Navi-Modul haben, um das beim Segeln mal auszuprobieren.
Da hast Du sogar noch die Anleitung dazu!
Irre. Jetzt habe ich dem Autor des Emulators vorgeschlagen, er solle in Anlehnung an den HP-41-Emulator für das iPhone/iPad auch die entsprechenden Module für den TI bereitstellen. Er wollte sich mal darum kümmern. Man, was für Zeiten, in denen wir leben! Dir noch ein super Wochenende. Hast mich mal wieder super happy gemacht. Schöne Grüße Roland |
March 4, 2015: your site Is amazing and nostalgic at the same time. I worked for an engineer in Edmonton Alberta in the latter half of my co-op term in 1977 and he introduced the TI 59 to me. I was completely thrilled to have such versatile power in my hand, and I bought one in late 1977. The following year, I had to send it out for service – you can’t have the charger connected and change batteries. Expensive lesson. While it was out for service, I missed it so badly that I purchased a second one. I still have those two, they still function, and one is constantly connected to my (still functional) PC-100A. They are still powerful little machines. In my final year at college, 1978/1979, I was the only person in the Civil Engineering program who had a 59 and my math instructor made a deal with me to teach one class every 2 weeks on how to use the programmable calculator. In return for that, I scooped up all the surplus CPU time from his classes on the college PDP-11/70, and that just made me a greater nerd. A few years later, I also purchased a TI 95, and also still use it; although it didn’t have the card reading capability, the alkaline battery life was far better and it had a larger LCD display. Love your site and wish you the very best. Ian |
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November 8, 2014: TMC0907 info Hello- I was wondering if you had any more information regarding the TMC0907 or any other chips in the same family. I decapped a chip from a Wiz-A-Tron and the die has the number 0970 on it, but it doesn’t seem to have the same pinouts as the TMS0972 or TMS0974. I’ve found the same chip in the games Comp IV and Code Name: Sector. I visually dumped the ROM code from a couple of the chips; Comp IV mostly runs using the same opcodes as a TMS1000, but doesn’t control the R-outputs quite correctly. The code from Wiz-A-Tron get stuck in an infinite loop. So I’m guessing there are some slight differences that I can’t find documented anywhere. I emailed you a few months ago about the SR16- I finally figured out what needed to be done to get it emulated; its instruction PLA removed the opcode 0x29 ALEM, and added a decrement Y to the TDO instruction (0x0A). I’ve since also purchased and decapped a TI30 and a TI Programmer, and I’ve got a T1-1270 coming. I’m hopeful the MESS team will get these incorporated into their emulator. Thanks- Sean |
September 17, 2014: corvus 625 with green display Dear Mr. Woerner, first I want to thank you for all your effort in producing brilliant Datamath web pages. I am a novice calculator collector (although not very young!) and very often refer to your pages when seeking for data on many calculators. Today I acquired a Corvus 625 calculator and, quite normally, wanted to learn something about it. Where else should I have searched for it but in your pages? There I found your notice about two types of display (red LED and green VFD) and your suggestion about sending you the information. Well, my example has a green VFD display and a serial number K 604859. Its colour scheme is very similar to the one in your picture, except for the dark brown "C" key. Also the label at the front reads "CORVUS" without number (625) which is written only at the back. Regrettably, the battery compartment door is missing. If you would prefer the pictures, I can send them in about two weeks time, because of the job occupation right now. Best regards Boris |
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Februrary 10, 2014: calculator assistance Hello, Joerg! I found your amazing calculator site thanks to the wonderful folks at TI support. I called them with a question and instead of laughing at me they directed me to datamath.org. I’m now writing to see if you might be willing to share your expertise with me as I try to solve a problem... When my dad passed away very unexpectedly in 2006, we gave each of his grandkids a chance to take something from his desk that would remind them of him. My then 7-year-old daughter chose his printing calculator/adding machine because she loved the way the paper came out of it. But, unfortunately, I forgot all about its significance when I was collecting things for an electronics recycling drive. I gave her Grandpa’s adding machine away and it was scrapped for parts. I am sick about it. (My daughter is handling it MUCH better than I am.) I would really like to replace it with the same kind, but I don’t even know the brand it was. All I have been able to locate is one photo of my daughter’s old desk where the side of the machine appears. I’ve attached a cropped shot here. The calculator is in the center (obscured by the alligator pen!) I don’t think that it matches any of the TI calculators on your site and I’m not sure where to turn next. Would you be willing to take a look at the photo and see if anything “jumps” out at you as a possible brand? Any assistance you could give me would be SO appreciated. Gratefully, Julie |
February 10, 2014: HELP !!!! TI-50 Constant Memory Problem Hello Joerg, Firstly, Thank you so very much for the use of your website, it is absolutely brilliant, outstanding in fact. Thanks. I hope that you might be able to help with the following problem. I have a Texas Instruments Electronic Calculator TI-50 Constant Memory in original fold slip case. Serial Number: 1304433 ATA0779, 1979/80? It is in brilliant cosmetic condition no scratches, dents, wear, pretty much spotless. Unfortunately, the rear battery cover has been prised open by previous owner and has a small nick mark, not a real issue; it clicks closes okay. Other than that it is what I would describe as nearly like new. Anyway, the issue I have is that I have replaced the batteries, which were worn & spent. It now powers on okay. Sadly, it is has a rather light display & is flickering all the time. I have only just purchased this, and from a charity shop for £5. with the optimism & hope that it will be working correctly once I returned home and replaced the batteries. I have seen this before with many other calculators, and left for a while, 50% of them do eventually set right - warm up from the long time unused I suppose? I hope that you might be able to give me some idea as to how to fix this problem, whether it is just worn out, or that there is a fools fixing method. I thank you in advance Joerg & hope to hear from you soon. All the Best to You & All, Brian |
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February 9, 2014: TI-81 1st generation Hi M. Joerg, First let me congratulate you for your calculator website, it's like a Holly Bible to me. I send you this message to complete your TI-81 1st gen database. I'm the owner of one of them. It has noside- battery emplacement (I can send you a photo if you need). When I bought it 3 years ago, I was surprised by the lack battery emplacement but thought every TI-81 were like that. Bye, Thomas |
January 28, 2014: Love your website Hi, Love your website. Went looking for info on my TI-66 which I still use on a regular basis. Bought it as a replacement about 30 years ago for my SR 56 which died. Only had to replace the batteries twice on my TI-66 in 30 years. Regards, John |
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November 7, 2013: Sinclair calculators Hi there Joerg, Just spent an enjoyable afternoon looking round Datamath while I was looking for info on a calculator my Dad used, the TI-58. I wrote a complex matrix-math scaling routine for microstrip filters for my B.Sc. (electronics) project and recently decided to see if I could resurrect the program on a calculator, so I have been looking around to buy one. They are pretty rare in the UK, it seems, and were obviously used a lot more elsewhere in the world.
I was curious as to why you don't have any Sinclair calculators in your "Related Calculators" section, as I was always under the impression that they used TI chips - I went to check this and came across this:
http://files.righto.com/calculator - which was a nicely written article about a reverse engineered simulator of the Sinclair Scientific. If you are interested, I have a boxed and working version of this calculator which I would be happy to scan/photograph for you to add to the site. I do realise you collect TIs, but if you would like to add this one to the list then please drop a line with details of what info you would like and I'll provide it for you. A pleasure to read your site - you seem to have had a similar career path (electronics/software) to me, and we are a similar age (1961 for me). Sincerely, Rob |
August 20, 2013: Thank you for maintaining the Datamath website I just stumbled upon your website, after searching for some information on a calculator of mine. Having owned a TI 35, a TI 58C and still owning a TI 59 and a TI-54 (the both are in use occasionally), the site brought back a lot of memories. Please keep up the good work, this is an invaluable and fascinating repository of TI calculator history. It may interest you that the TI58/58C & 59 offered some neat programming tricks, specifically in conjunction with the PR100 (A/B/C) and the master module: By using the GTO to jump to intermediate locations in the ROM (e.g. parts of longer keycodes, e.g. the address of a GTO) one could put the calculator into "weird states", allowing additional functionality (or better: the calculator was behaving out of spec, but in a relatively predictable way). It was typically used to put the calculator into FAST mode e.g. regular calculations in standard RAM operated twice as fast as usual, at the same speed as the programs stored in the ROM module. Another trick enabled by this method was that the PR100 printer would only step forward one pixel instead of 8 to generate a printout. This was used by a lot of sophisticated programs to print out graphs and other images, all of which these calculators couldn't do via standard mechanisms. I still have a lot of the magazines of one of the GESPRO german calculator "hacker magazines" around somewhere out of nostalgia that were publishing these and and other tricks. It contained a lot of such hacks and many modifications to the calculators (additional LED's to show specific states, improving the performance and using it as a control unit). There was quite a "modding scene" specifically related to these models in those days. If you're interested, I can scan those in. I also should still have a copy of one of the patent application for the technology of the TI58/59 calculators around here, this is a reprint that the previously referenced magazine issued as an "Internals" documentation (it was quite detailed). It contains an enormous amount on the technology used in these calculators, from details on how the 4 bit microcontroller is reading out the (serial) ROMs to the processing of the numbers and how the keyboard is scanned out (which is done by addressing a certain address space in a specific way). Very fascinating stuff and maybe one of the reasons why I work in my current field of technology. In any case, thank you for maintaining this site, I will visit it occasionally. Regards Paul |
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July 29, 2013: Mostek Calculator Chips I recently came across your Mostek IC page, where you list the MK5012P, 5013P and 5014P. I just wanted to let you know that the Commodore US-121P, a large printing calculator with memory and no electronic readout, uses a 5013P, 5014P and a *5015P*, which you don't have listed. The three chips also carry secondary part numbers, R1200-1, -2 and -3, respectively. Like the other part numbers, the 5015P is a 40-pin white ceramic cerDIP with gold pins and cavity lid. I've seen the 5013P and 5014P together in several different models of calculator (cant recall the models anymore), but the US-121P is the only calculator I've seen that uses the 5015P. Micah |
July 29, 2013: About Texas Instruments TI-1100 calculator Dear Joerg, Thank you for your wonderful Datamath Calculator Museum. I have no valuable additions to the articles, but maybe the following fact will be of some interest for you: I have a Texas Instruments TI-1100 calculator bought in Paris, France in 1984. Not only it still works, but it still runs on the original battery! (Please, find attached its photo made a few days ago.) Next year, I must find some proper way to celebrate my calculator's 30th anniversary. Best wishes, Piotr |
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May 17, 2013: TI-35 Plus Hi Joerg, First of all, thanks for the extensive work you've put into your site. While I don't collect calculators, I've found the site useful in reminding me approximately when I must have bought my calculator. I'm in the midst of (what is for me a very difficult) chemistry class so I don't have a lot of free time, but at some time in the future, I hope to be able to send you a decent photo of my TI-35 Plus, which comes with its original flip case, quick reference guide and manual. It's this chemistry class that has forced me to finally learn how to use my calculator! I noticed there's a pretty low res scan of the quick reference guide that's been labeled "manual", but it's not the actual manual. The manual was a trade paperback-sized softcover of, I'm guessing, 50 pages. Mine is copyright 1986. I'll try to scan that in for you some time in the next year (sorry to tease you so early!). Thanks for your generous reference site, Megan |
April 4, 2013: Canon F-73 Attached is mine. Bought in Perth Western Australia when they first became available; it has been in a drawer since I retired in 2008. Just switched it on and the original 1982 batteries are still working fine. That's a battery life eleven thousand times better than my new mobile phone. Well, I just had to tell someone. I am amazed! cheers Francis |
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March 27, 2013: TI-1750 I stumbled across your website after pulling out an old calculator of mine that's been sitting in the back of a drawer of my desk for many years. I thought I might learn something about it and I did! My device came in a brown plastic case which opens like a book and which kept the calculator in excellent shape. I still have a receipt tucked inside and found that I bought this calculator on 8/23/77 and paid $15.87 at Fedco here in San Diego. A discount store long closed, Fedco was founded by Sol Price who went on to develop Price Club, now called Costco. I'm thinking my calculator is a first design. It's Serial Number (what simple calculator has a serial number nowadays?) is 162937. I think the batteries might be the originals, if that is possible since they still power the device. The three batteries are labeled 389A. In that same drawer, I just pulled out what might have been my first small calculator. It's a Casio Memory- 8F. It's nice to know that someone is interested in the history and design of these antiquated devices. Maybe my wife will stop complaining that I never throw anything away after she learns that these old tools represent important technological history, at least to a few people. Regards, Mike |
March 20, 2013: The TI-1750 Hi Joe, I just called Texas Instruments to get an email address because I wanted to write them to say thanks for over 30 years of use of my calculator – the TI-1750. I have used it regularly since I received it as a gift in 1981. Years ago I dropped it and the back came off and I just pushed it back on, so it looks slightly dented but it has never stopped working. And I have never had any batteries changed. I’m sure someday it’s going to quit on me and then I’ll be devastated! Anyway, they gave me your website address also and it was fun looking at the museum, with my oldie in it. Just thought you might want to know. Ami |
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February 24, 2013: Welcome to North America I liked your website. We are a Texas Instruments family. My wife also moved from southern Germany to North America. They did not have a c-can(container) but a Volkswagen bus and a big crate on top. So my two children are ½ German. I found you by looking up a TI 1104 that I got my wife in the late 1980’s for use in the kitchen and for shopping. There was a bin full of them at my lumber supplier and I think they were selling for $7.00 each. My wife’s brother (also born in Germany) used a red LED TI that was programmable. He needed it for SAIT Polytechnic and he got a deal at the campus bookstore. It still cost him a bundle back in the late 1970’s. My daughter is a high school math teacher and she has a TI, her third I believe. It is a programmable graphing calculator. My son needed a good calculator for his Aircraft Maintenance Engineering course at SAIT Polytechnic so he chose a TI-83. He was resourceful and bought it used. Me … Well I worked for Xerox … so I had a Xerox pocket calculator. It did not cost me anything. It looks like you are interested in cars. Here is one that I gave to my son. He restored it and changed the engine from an unpromising 2.8 litre to a Supercharged 3.8 litre. Thanks for the moments, Will |
February 2, 2013: TI-2550 Webpage kudos What a great webpage about a pioneer calculator! I have a 2550, date code 504, that still functions flawlessly. Even though I have other, "modern" calculators, including scientific models and one elderly TI-Programmer, the old TI-2550 stays on my desktop, in daily use. Check register calculations and countless other "routine" ops go to the 2550. I purchased my TI-2550 new, in Montgomery, AL, soon, almost certainly, after it was manufactured ($70 or so, I think). It outlasted several sets of NiCads before the charger became unusable due to wire deterioration (brittle, cracking). It now operates almost exclusively using NiMH cells (charged separately), which work well. I saved a copy of the pdf manual, since mine is long since gone. Again, a great webpage, so I hope this message reaches you. Robert |
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October 9, 2012: hello & Toshiba LC - 825 Hello, I bought one of these calculators new in the 80's and used it at work for about 10 years. I still use it but not quite as much as back then and it still has the same working battery that it came with. I just find this amazing and had to tell someone. Teresa |
October 10, 2012: Purchase of the TI-59 Hi Joerg: Thanks for your purchase on eBay. I surfed over to your website…really nice information, and enjoyed reading about you, your family and your passions! I, too, was born in 1960, and have a degree in Chemical Engineering. I started as a process engineer in the oil refining biz, then migrated to investment advisory, estate planning, etc. I have hobby businesses in antiques, coin collecting, marble collecting, stamp collecting. I’m sure we’ll be in touch. Living in the hot bed of nuclear technology (near Los Alamos, NM) and attending estate sales, it’s amazing what stuff I run into. Regards Harry |
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September 24, 2012: hello & thanks for the TI data I wanted to send you a quick email to say thanks for all of the TI data. Being a college student of the mid seventies, I too purchased a TI-50A that I wanted to revive for old time sake. Your website provided me with the necessary information to do so and I enjoyed reading about your family's experiences and you relocation to America. Thanks again and best wishes Peter |
October 6, 2012: Thanks for the manuals for the Spelling B! My kid is now able to play with mine from when I was a kid. Gotta love modern technology letting you use old tech. Michael Sent from my iPad (woot!) |
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September 10, 2012: TI-30 iii (1985) still running with same batteries Hi, http://www.datamath.org/Sci/Modern/TI-30-III.htm Ran across your website while searching on TI-30 iii. We have one that was bought in 1985 and is still running on the same batteries. It isn't solar! How can that be - how can this still be running? Have you ever run into this? Very strange and had to share with someone who may find it interesting.... or not.... LOL Cheers, --jeri |
September 17, 2012: Kudos Dear Joerg, I am retired Navy and retired computer designer... I was introduced to the TI calculators in the 1970's... While attending college under the Navy ADCOP degree completion program, I purchased the wonderful SR-10 for about 2 weeks salary ($150.00) and a 2 month wait... WOW, it was amazing and made life so easy with mathematics, chemistry and physics calculations... Somehow i discarded it and purchased a TI-30, which I still have, along with my TI-55.. Also, I still have my expensive Log Log slide rules... as momento to the past... I have thoroughly enjoyed your website and extensive details... What a wide array of TI... My only question for you is a source for the Battery Chargers that came with the calculators???? Any thoughts or references would be greatly appreciated.... Thank you so much for the information, Regards, Jim |
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August 28, 2012: Thanks for your site Hi! Just wanted to say thanks for your website. I still use my 20+yr old Texas Instruments scientific calculator. Somehow, I had activated the round-off feature and had no idea how to reset it. Glad I found your site and a "digital operating manual". Cindy |
September 3, 2012: My Datamath Thanks Joerg, I appreciate your following up on my emails. It was fun finding out about the Datamath. Your information on the internet was very informative, thanks for putting it all together. Jerry |
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July 18, 2012: Texas Instruments TI-82 Stats.fr (Red) Hi Joe, I am really impressed with your site! I was looking to purchase a TI-82 Stats.fr, because I wanted a TI-82 (or 83, 85) that was unique in some way, and I very much like the maroon color. Although, I'm not fluent in French. You mention in your description that it was also made in Great Britain. Do you know if they ever produced a TI-82 in maroon in the English language, or where I could find one? Thanks so much! And Kudos again on the fantastic site! Sharif |
August 9, 2012: TI Calculator I have a question about an old TI calculator. When I was a child my grandpa died and I was given his calculator to remember him by. As I remember, it was a fairly small calculator that had no solar cell. It had a switch to turn it on and it did not go into sleep mode (if you left it on the battery would die). I think the housing was all or partly metal and it had a leather cover that would fold over it when not in use. I lost this calculator soon after I got it and have always wished I could have it back. If you have a guess at which model this might be please let me know. Thanks, Hyrum |
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June 25, 2012: Original TI-1100 I have an original "TI-1000" the same as shown on your web site. I received it as a company Christmas party gift in December 1983 and have used it on a regular basis to this day. The completely amazing thing is that I have NEVER opened the case to change the original battery it is still working like new almost 29 years later. After 5 years I was expecting that the battery would need to be replaced, then it was ten years, twenty, twenty-five and I keep wondering if this thing will never die. I hope it doesn't, it is the best little calculator I've ever owned. Have you ever heard of anyone else experiencing this life on another TI-1000? |
June 26, 2012: Fehler in TI-30X-PRO.htm Hallo Jörg, wir hatten vor ein paar Jahren mal gemailt, da warst Du gerade wieder in die USA umgezogen. Habe folgendes bei Deiner Seite: http://www.datamath.org/Sci/Modern/TI-30X-PRO.htm entdeckt: 2 x Complex numbers nach: Deine Seite ist wirklich super, gut, dass es Dich gibt und Du Dir diese Mühe machst Viele liebe Grüße Roland |
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June 15, 2012: Schlimme Homepage
Schlimme Homepage |
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June 13, 2012: Thanks very much for Datamath!
Hi Jörg! |
June 15, 2012: Thank you for Datamath website
Hi Joerg, |
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June 13, 2012: TI-30 III
Hello Joe, |
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June 07, 2012: TI-30 SLR found
Hi Joerg; |
June 09, 2012: TI-3500
Hi Joerg, |
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May 21, 2012: Thank You
Hello, |
May 24, 2012: TI-66 Hello Sir, I googled for TI-66 and found your web page. I began working at TI in 1983 and the first things I purchased from Employee Sales were a TI-66 calculator and a TI-200 printer. The printer has long been discarded only because TI quit producing the thermal paper for it. The calculator still sits on my work desk now 2 companies and 2 cross-country moves later and still runs on the original batteries. Jerome Barry |
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May 16, 2012: Student Business Analyst - I-0784 BA-35
I bought this new in 1984 and am still using it today (I’ve had to change batteries, of course). |
May 17, 2012: More about TI-503SV If you hold down certain buttons (such as 2 and *) while turning on the calculator, weird things happen with the display. You might want to put something about that in the article. Credit me as flarn2006 if you do please! |
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April 19, 2012: TI-60_US Manual Request
Hello, |
April 24, 2012: TI-1750 I have been using my TI-1750 almost daily for 33 years.
I have never changed the batteries. |
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March 23, 2012: Little Professor
Dear Joerg,
I called Texas Instruments and told them the story of my little professor and they gave me you website address so
I could look to see if my calculator was there and sure enough it was. I have a 1982 Little Professor that I received as a Christmas present one in 1982 and I can hardly believe it but it still works. This amazes me because I have moved several times and it has traveled cross country and spent years in a garage and then a shed in Arizona where the temperature did not phase it. More amazing than it working is I don’t ever remember changing the battery and I know for sure it has not been changed for 20 years. I have no idea how it still functions and I have not been brave enough to take the cover off the back to see what is going on inside. I just wanted to share the story because I turn it on every one in a while and it never fails to be at the ready.
Thank you for your sight it is a walk through memory lane. |
April 11, 2012: Teal Photon solar calculator
Hello Joerg |
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February 22, 2012: Little Professor Hi Joerg, I came across your pages about the "Little Professor". I still have my 1982 UK model from when I was a child. I think I got it from either my parents or my grandparents, and I doubt that they would have bought it in the UK - I don't remember any of them every travelling there. They may have bought it in Germany, but most likely it was bought in Denmark. Long story short: I'm fairly certain that the model was also sold outside of the UK.
Best wishes, |
February 24, 2012: oshiba SLC-8260 Dear Joerg I don't know if this is unusual, but I have a Toshiba SLC-8260 calculator, probably purchased in the late 1970s, which I use at least once or twice a week. It works like a charm. Since I would not normally be too concerned about an error of the type described on your web site, a wrong result of one part per 5764800, I intend to use it until it, or I, fall apart. Cheers Vern |
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February 16, 2012: Texas Instruments: Mathe-Fix Hallo Joerg, immer wieder – und stets mit großem Interesse! – lande ich auf deiner Website datamath.org. Genau wie du bin ich ein großer Fan von sprechenden TI-Produkten, auch wenn meine Sammlung bei weitem nicht so umfangreich ist wie deine. :) Ich wollte dir etwas mitteilen, das den deutschen Mathe-Fix betrifft: Ich weiß nicht, ob dir es dir bekannt ist, aber diesen gab es in zwei Ausführungen (ich besitze beide). Das spätere Modell (bei Karstadt damals als „Mathe-Fix II“ angeboten) ziert ein gelber Aufkleber auf der Packung mit dem Hinweis „Jetzt mit neuer Sprachqualität“. Ansonsten ist äußerlich alles identisch. Tatsächlich aber ist die Sprachsynthese weitaus besser. Auch verwendet der Mathe-Fix II neue Ausdrücke und lange Zahlen klingen nicht mehr so monoton. Falls dich Details wie Fotos oder Audio-Samples hierzu interessieren, sag mir Bescheid. Ich versuche, dir dann alles zu beantworten. Viele Grüße derweil aus Augsburg – Daniel |
February 18, 2012: Early TI-35 Hi there, after a reminiscing post on Facebook by a school friend about learning calculator maths in early high school, I went looking for my TI-35, which I knew I still had (along with the "Student Calculator Math Book" I got with the calculator in, if I recall correctly, 1981 here in Sydney, Australia). Found the book same day - took a week to find my TI-35, though. In looking on the web about TI-35s, I found your site and the info on the different models. Mine is S/N 3229735 with a manufacturing code of ATA4280 (so week 42 of 1980) and has the more silvery faceplate and black LCD surround. I loved the idea of your forensics page - it's like dating maps/globes by the timing of country name/border changes, etc. Mine returns 9.177087103 as well. Just thought I'd let you know and thank you for your informative site :) Kind regards Sean |
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February 5, 2012: P1110437.JPG Dear Joerg, I'm a weekend calculator's collector from Korea, and I found a different version of Ti-1768. In this, the solar cell is smaller and located above the display. I got mine with the magnetic wallet. I'm sending a picture of the calculator as you might be interested.
Thanks for all the work done, as it's always a great pleasure to looking
for stuff from your site. |
February 12, 2012: DATAMATH CALCULATOR MUSEUM item to add Hi - Out of curiosity, we wanted to see how old my trusty, and still working TI-502 is. We see some on your list, but want to let you know, they came in white as well (mine is white).
Still working great and on its first battery! Enjoy, Cyndy |
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January 13, 2012: TI-83 Silver Plus latent defect? Good morning; I just have a (hopefully) quick question that I did not see addressed on the Datamath.org website: Sometime in the 1990's, we bought our son a TI-83 Silver Plus graphing calculator for school. It had a serial PC interface and the calculator itself had a 3.5 mm circular phono jack on the center bottom edge below the keyboard. I toiled for unknown hours (hundreds) over the course of many months to get the interface to work, all to no avail. Finally, working through TI tech support with multiple phone calls, they and I were convinced that the serial interface in the calculator was actually bad, and they offered and did replace the unit with a new one which instead sported a USB interface and hence (if I remember correctly) a mini-USB connector in the spot where the 3.5 mm circular connector had been. The newer one worked flawlessly from the start. I do not remember if the new one was also marked a TI-83 Plus Silver, but I do know it was a transparent case like the first one we'd bought, and somehow remember it being identical except for the PC interface connector. I was just wondering if there was a larger latent technical problem with the serial interface on our original TI-83 Silver Plus that made them willing to swap it out for a new one at no charge, or if we just somehow purchased a 'lemon' by chance and were the recipient of some really good customer relations? Thanks, and I enjoy reading through the history of these calculators. My first one was an SR-10 electronic slide rule when I was an undergrad around 1973 and cost $110. I still have it and it still works. John..) |
January 13, 2012: SR-52 DataBase Update for ya Hi there... Saw your TI calculator museum and all the good info. I purchased a SR-52 and a PC-100 printer new 4/9/76. Did some stuff with PPX, etc. All still work A-1
Info for SR-52 DataBase: Ser.#038938 USA 1376 DTA
Steve Dodds Also, still use 1997-2003 TI-30XA (A on Calculator -- User Manual says TI-30Xa ... interesting)
Better design than 35 PLUS
regarding longevity of key imprinting |
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January 3, 2012: TI-1020 Hi Joerg, Thanks for the info about the age of my calculator... I could not tell how old it is, now I know , since it's a brown covered type: 32 years !! (and for the record, my TI-1020 is still working perfectly well ) Do you think that items manufactured in 2012 will still be there in ...2044 ???!!! Great job (from you and TI) |
January 12, 2012: Just stumbled apon your webpage On a whim I googled the model # of my TI calculator that I have been using...oh...forever. And discovered its 30 years old! Holly cow.. might be time to get a new calculator...lol Its a TI-30 SLR Still working just as good as the day I bought it. I use it almost daily. Keep it - they don't do this quality
anymore!!! See now you made me feel bad for the old girl. So I broke out the alcohol wipes and cleaned the handjam off her. All shined up and ready for action...lol |
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December 30, 2011: Sharp EL-801 IC's Hi Joerg, Congratulations, my plans for a website of my own don't get any substance, but the impressive sites like yours and Nigel's (and of course Rick Bensene's) provide lots of detail to everyone interested. They made me resume collecting after many years. Best regards, Gerard |
December 31, 2011: Happy New Year Thanks for visiting my Datamath Calculator Museum. Regards, Joerg |
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December 29, 2011: I appreciate your Datamath museum I bought a TI-2500 back in 1974 I recently found a TI-2500B on Ebay Pictures here: http://coldfusion-guy.blogspot.com/2011/12/ti-2500-calculator.htmlk |
December 29, 2011: Comment on TI-1766 I was installing a new Power Mac and cleaning my computer desk and drawer and decided to polish up my old TI-1766, and to let go of it’s case, which was missing the cover. I got curious and googled, and found your site. Amazing to think that my little pocket calculator has been with me for 30 years, and I still occasionally use it. Still works like a charm! |
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December 27, 2011: Math To Go! Hi there, I just purchased a Math To Go for my neice – but cannot figure out how to open the battery compartment in the back without breaking it! Any help is appreciated! P.S. Love your site Thank You Stephanie |
December 2, 2011: Mystery "TI-59" mag cards Hi, I've really enjoyed your calculator museum site. I'm trying to get my own TI-59, which I got for Christmas back in 1978, back in service. I've got the card reader going, with the help of a gummy-wheel kit. And it works great on 2 cards that I have. I ordered a book of cards on Ebay from xxx@comcast.net. But they don't work, and seem to be different. And the seller has not responded to my email to him. I was hoping that maybe you could tell me what it is that I have. The cards I bought are a less yellow, deeper gold color than the ones I have that work. They are also shorter. 72mm vs 75mm. Their magnetic surface is shiny, whereas the ones that work are a more satin finish. I was thinking that they might be SR52 cards. But some of them say "Solid State Software" which (I think) was specifically a TI58/58C/59 slogan. I've attached a photo. The top card works. The bottom cards go through the reader, and the motor keeps running until I press R/S, and nothing is read. When I hit R/S I get either a flashing 63 or flashing 32 in the display. I apologize for emailing you directly with a tech question about a product I didn't buy from you. But I've googled around and have found neither an answer nor an active forum which seems appropriate. If you happen to know what I have here, or could direct my to the proper forum, I would be very grateful. And I do suspect I will be buying some stuff from you in the future. (I was the first bid on the TI59 you sold yesterday, but I didn't win.) In fact, if you have the right mag cards, or a Master Library module, I'd be interested. That's another problem with my purchase from xxx@comcast.net. It was supposed to include a Master Library Module, but instead included the RPN Simulator Module. Sincere Thanks, Steve |
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December 23, 2011: Texas Instruments Speak & Spell Basic Builders Grade2-4 Dear datamath-calculator-museum, thank you for your business once again. I use your website datamath for the hard to find electronics information from time to time and it is a great site. thank you. have a great day. godbless. - retro_nostalgia_manias |
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November 28, 2011: TI-30 SLR Nice page on the TI-30 SLR. I still use mine every day and keep waiting for it to break so I can get something newer, but the darned thing wont stop working! -- Charles |
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October 1, 2011: 2.55MP now available for TI-84 Plus Family Hi, I think your website is awesome! I recently bought a used TI-84 Plus SE which came with version 2.40, so I downloaded the latest version from TI's site which is 2.55MP. You might update datamath.org to list 2.55MP as the latest version for the TI-84 Plus Family. V/R, Mark |
October 27, 2011: BP7 PCB Hallo Jörg, vielen, vielen Dank. Der Steffen konnte wirklich helfen und schickt mir bereits morgen die Baugruppe zu. Den Ti-57 hat mir vor 30 Jahren meine Frau aus den USA mitgebracht, ich hänge daran, obwohl es 100-fach modernere programmierbare Rechner gibt …. Nochmals Dank für die schnelle Hilfe. Gruss, Ulrich |
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September 20 2011: TI-1200, etc... You've got some amazing history there... and a terrific resource for those of us who love the history of technology! You're doing a truly valuable service in preserving information that could so easily be lost as obsolescence and the eventual breakdown of components sends these artifacts to the trash bin. I'm a calculator geek from way back. Spent $40 for my first four function model, on sale. Half the going price for similar units. Still have a HP41CX with barcode wand, printer and some modules (and all the manuals last time I looked) AND still regretting giving away the TI-59 with ALL the accessories back when I got the HP... Some other HP models I have are a 20 and 27S in there cases, with the manuals somewhere in the basement<G> FWIW Just picked up a TI-1200 S/n 944XXX (the reason I was visiting your site) It LOOKS nearly NIB condition, even though I picked it off the shelf in a thrift store. The display shows a few light scratches, but it's a beautiful piece of history. The HP 15C (254GA57XXX) sitting next to it came home too. The case only shows the slightest trace of pocket wear... Neither machine shows any gross signs of wear, so apparently they were both someone's prized, and gently used, calculators, and got donated straight from their desk drawer to the Goodwill folks. If you'd like any pictures for your site I'd be glad to help Thanks for sharing your collection with the rests of us! TedB |
September 29, 2011: Texas Instruments TI-31 ANYLIGHT SOLAR Thank you for your website. I can't remember how to use my calculator. I downloaded the manual and it's sure to help. One thing I questioned though. You showed the date as 1986. I graduated in 1985 and 1983-84 was the last year I took math in high school. I was sure I had the calculator that year. I took Trigonometry and Math Analysis. I have another standard calculator from when I was 10, but 1983-84 I needed square roots and other functions. So perhaps it was sold in the fall of 1983? My calculator says Japan on the back with patents, but I can't find a date. Just thought you might like to know someone appreciated your efforts. Laughed when I saw "Calculator Museum" on the website. Well thanks again. Brenda |
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September 25, 2011: Texas Instruments TI 30 STAT Thank you. I have misplaced the manual for my calculator that I have used frequently for the last 25 years and needed to know what the key sequence for conversion from degrees to radians is. I was very pleased to be able to download the manual so easily. Just for interest mine looks like the 1987 model on your website and has the date wk 38 yr 86 on the back. Regards Melanie B |
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July 24, 2011: Thank You! Hi Joerg, Thank you for posting the user manual to my very old Texas Instruments calculator on Datamath.org. You really really helped me out! xoxo Dawn |
July 24, 2011: Your Calculator Article HI,
still own the original Texas Instruments TI-1100 II
and have used it continuously since 1986. Can you explain to me why, after
25 years, the original battery has never died? |
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July 19, 2011: Question on the TI-59 AC charger Hello, I visited your very impressive TI webpage because I have an old TI-59 (bought in Sweden when I was a student there in 1980). I have the AC9900/H power adapter (6.2 V 200 mA) which is noted on your web page but it also says that the AC9131 adapter (3.3 V 500mA) is used with the TI-59 and they both give different voltages, which make it confusing to me since I am not an EE guy. How can the TI-59 handle both these? Is it because my TI-59 is a EU version that uses the AC9900/H EU adapter and the TI-59 US version uses the AC9131 US adapter? Then the power circuitry must be different if there really is a EU and US version of the TI-59? I also tried to use the repair BP1 instructions for my TI-59 by connecting a cordless phone battery (3.6V 800mAh) directly to the +/- strip terminals on the back of the TI-59 (I soldered wires on the terminals because one was broken). After turning on the LED flashed errousenely and the card reader started running, I am not sure what happened. It might be broken.
I appreciate any comments you have to answer. |
July 22, 2011: Canon Palmtronic F7 Hi,
my F7 was giving trouble through intermittent key
malfunctions. I've had this problem with similar gear so had no hesitation
in pulling it apart to clean the printed circuit. As I separated the
plastic cover to
Saved! I quickly reassembled the device and it's
Many thanks - Max, |
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July 14, 2011: TI-30
Hi, |
July 19, 2011: TI-62 Galaxy help Hi there, Firstly i just want to congratulate you on your excellent Calculator website! Very Informative! I'm hoping though that you might be able to help with something. I recently acquired a TI-62 Galaxy in Excellent condition. However, after thoroughly scouring the web, there seems to be NO copy of it's User Manual anywhere! I'm hoping, being an owner of the TI-62 yourself, that you might have, or maybe know someone who has a physical copy of the user guide, that could canned in & then put up on the Web for all to share?
Whilst I appreciate that various people have compared
this calculator to other similar scientific & programmable machines.. It's
still not the same & there are subtle differences. Can you help? Kind Regards, Alistai |
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June 14, 2011: Datamath
Hi, there, |
July 6, 2011: Concept 24 version 1
Hi Joerg, |
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June 21, 2011: TI-52 Solar Cover
Hi Joerg! |
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June 2, 2011: Calculators
Wow. I was kind of surprised to see the TI-37 galaxy calculator in a
museum. I'm still using mine. |
June 3, 2011: Re: TI 5045 SVC calculator Thank you. I really appreciate your help in locating a Manuel for a calculator with more functions then I need. Thank you again, Ed |
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June 2, 2011: My Calculator
I am still using (all the time at work) my Europa 10 |
June 2, 2011: TI-30D
Hi! |
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May 29, 2011: TI-36X II
Hello, |
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May 13, 2011: Re: Calculator IC Joerg, Many thanks for that VITAL information. It crossed
my mind about red = -ve etc but I thought surely not !!!! I have
the remains of the 'power pack' inverter and may be able to repair it or
run the calc from a 9V battery. Please advise about this. If I can be of any help to you info wise then please contact me.
Very Best Regards, |
May 23, 2011: Thanks Joerg,
I have one (Dataman) It works just great. |
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April 28, 2011: TI-88 made in Canada?
Hi, |
May 7, 2011: DATAMATH CALCULATOR MUSEUM
I still have my TI-55-III, and now I know where it came from. Thanks!
Crazy that it is still working 25 years later. Never replaced the battery
either. |
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April 26, 2011: PS-6700 Thank you so
much, I could not figure out how to lighten the contrast on the screen.
Now I am able to use my PS6700 and it is like brand new. What a great back
up to have. |
April 19, 2011: SR-56 serial number etc
Hi Joerg, |
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April 14, 2011: French Speak and Spell Internal word list Hi Joerg, |
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April 11, 2011: Datamath in mint condition
First , thanks for your quick reply . Secondly , I enjoyed your website
very ,very much. Great effort !! |
April 12, 2011: TI-30 STAT Hi Joerg, |
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April 4, 2011: TI-25X SOLAR #110669996383
Dear datamath-calculator-museum, Are there any other Scientific TI calculators that you recommend... or not recommend? Cheers, |
April 10, 2011: Datamath in mint condition
Joerg ... |
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March 25, 2011: PC-100 print cradles for TI Calculators Hello Joerg, |
March 28, 2011: Intense auction TI-67 I lost, my bid was a dollar shy of the winning bid. Happy to get the price up a bit for you, otherwise it was sitting around $40.
Great web site, I just got a 65 and 66, the 67 and 68 would make a nice
set. Anyway
thanks for your obsession, and your work. GD |
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March 20, 2011: TI-1750 Hello Joerg,
In 1979 I began working for the old Metals and Controls division of Texas
Instruments. In early 1980 TI added an employee store to our location in
Fort Washington, PA and I purchased one of the first generation TI-1750
Datamath calculators. Over 30 years later I am still using that same
calculator several times a week and, what is most amazing to me, still
using the original battery! That must be some kind of record. I have been
tempted to open the case and take a look at what manufacturer produced the
battery but am afraid I will jinx myself and it will die on me.
Regards, |
March 21, 2011: TI-1035 Dear Mr
Woerner I've been collecting calculators on and off for several years and just recently found a TI-1035, serial No. 391493 that does reveal the manufacturer --- Made In Japan. I've attached two photos of my much used TI-1035 for reference. Keep up the great
work. |
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January 9, 2011: Questions on TI-1500 calculator
Thanks for the tips on opening this calculator. I
ended up replacing the NiCds in the calculator. The existing ones were
extremely corroded. |
February 11, 2011: Just to say thank you! Hi,I would like just to say thank you for the marvellous website you have constructed during these years. I have enjoyed many hours just surfing through the different models, technologies, documents, etc. It has been “the vademecum” for calc collectors (modestly, I am one). I am very interested both in HP and Ti calculators. TI models are relatively easy (and cheaper than HP) to find in Spain, as some of the Classic models were built in Madrid (Torrejón de Ardoz). By the way, reciently I have aquired for peanuts a SR-56 and a 5050, both just dirty, but working, “in the box”, with all the extras: programming pad (SR56), manuals, charger, box, etc...I shall send you some photos and the serial number of the 56 in the next days. Again thank you! and long life to the TI calcs! Regards, Ignacio, Valencia, Spain |
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January 8, 2011: SR-56 serial number
Hi
Joerg, |
February 8, 2011: Thanks Many thanks for publishing a pdf of the Texas TI-34 instruction manual. After many years I wanted to use mine again but of course, the instructions are lost. Really helpful being able to access your copy!Regards Gary |
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February 2, 2011: thanks for the BA-II manual - saved my bacon Need to change a few things – and your site had what I needed Thanks again Rick |
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December 19, 2010: my SR-52
Joerg, I also own a TI-59. |
December 22, 2010: Datamath A022295 Hi Joerg It still works just fine. I
remember my father buying it for around £50 in 1972-3 which would have
been a lot of money in Scotland in those days. We were only allowed to use
it when he was in the room. I think it got a lot of use as the base metal
plate is quite worn. Let me know if you'd like
photos of it. Congrats on a very informative website. Having just checked
prices on ebay, I am surprised that a piece of computing history is
available quite so cheaply.... |
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December 4, 2010: Subject: Thanks - TI-5048! Thanks so much for posting this information, as I wondered today how old my machine was, as I bought it new after seeing one in a client's office.I was inspired to check it out after reading an article in WIRED, which featured a 20-year old Sony calculator in Afghanistan, encased in a custom wooden cradle!! http://www.wired.com/gadgetlab/2010/08/electronic-devices-afghanistan/ Thanks for listening, Christopher |
December 12, 2010: Subject: Vintage Calculators Hi,First, I love your website, thanks a bunch for putting out so much great information! I have been looking for a datasheet for the TI TMS0102 family chips and finally found something on your site. http://www.datamath.org/Chips/TMS0102.htm Just to add to your great database of knowledge, I have a JCE Mark II with an IC TMS0103NC data code 22nd week of 1973. It is classic TI design all the way from display drivers to Kixon keyboard. The Advanced Electronics Mini Executive also uses a TMS0103. ~thanks again ---joe |
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November 2, 2010: Subject: From a TI58/59 lover Hi JoergThank you for your wonderful site http://www.datamath.org I am a lover of TI58/TI59 series and your site is really precious for me. I would like to alert you to the link at PDF document "SAMPLING PLANS" on your page: http://www.datamath.org/Sci/WEDGE/PPX59.htm I have clickked many times but my computer download the "SECURITIES" pdf document (not SAMPLING PLANS document). Thank you very much for your work Best regards Giorgio |
November 21, 2010: Subject: Canon FC 43 Hello,I'm just emailing to say that i still have this Canon card FC 43 metric converter calculator and still love it! I have it right here and still use it in an accounting course. I was given it by my engineer boyfriend nearly 30 yrs ago to help him calculate data for his thesis on laser light technology - back in the day. Anyhow, it is in great shape and has only had the battery changed once. I use it in exams and it has never let me down. I just wish I could clean up the case (original, opens to the right) as the plastic is scuffed. Do you know where I could buy another case? Anyhow, interesting site! Kelly |
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October 28, 2010: Subject: Calculator UL code search: is there a trick? Dear Joerg,Thanks for your site on Datamath calculators... and much more. I especially found the Underwriters Laboratories technique to find out about older electronics very interesting. Do you know if there is a trick to getting Underwriter's Laboratories search to work? I tried but could not get it to find anything. I went here: http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/gfilenbr.html and tried E42662 - which was the number in your first example, but got not results. Might you have another search page that was working for you? I'd appreciate much if you could share it. Happy computing! - David |
October 30, 2010: Subject: TI-5317 Joerg,I just bought this model at a thrift store - it prints in black and red, not one color as your webste suggests. I should say.. thanks for the pdf manual. you had a manual for another model but they keys are the same - helped a lot! Jeremy |
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October 3, 2010: Subject: Thank You Thank youGrace in your site, I was able to identify a former(ancient) calculator SR11 V2 that I repaired. Ellle works very well. Batteries were out of order as well as the cablage. Didier BORRAS France |
October 15, 2010: Subject: Manual Availability for the TI-55-II Joerg,I was going to chuck my TI-55-II and I saw your nice website, so I can doodle around now with some simple programs. I think it is a standard TI-55-II. I hate those stupid little batteries, is all, wish it took AAA's. Are there collections of simple programs for it? I don't recall the Calculator Decision Making manual you refer to. It is avaialble as a pdf, that you are aware, obviously at Amazon online mayhaps. Anyway, thanks for posting the info about this interesting calculator. Henry |
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September 21, 2010: Subject: TI-5021 Superview Manual Thank you very much for the information you have collected on your website. With the manual I got from you, I can finally figure out how to use my TI-5021. I have recently discovered that I am fascinated by old calculators and I scour my local thrift store at least once a week for them. I may end up like the "cat lady", but with obsolete calculators. So far I have found:TI-5021 Superview TI-85 Sharp ELSI MATE EL-220, mint condition Sharp ELSI MATE EL-8130A, unused with original leather case, manual, unused note pad (with order form), and original batteries (corroded) Royal LCB841 checkbook calculator with case HP-15C with original case Thanks again, Josiah |
September 30, 2010: Subject: SR-52 Database Hi Joerg.I recently purchased on eBay an SR-52 in excellent condition cosmetic and working condition (except that the motor can't pull the magnetic cards through). Your page requested serial number and date code information for your SR-52 database. The information on mine is Serial Number: 6829819 Date Code: LTA 1477 Assembled in USA The purchase also included the owner's manual and operating guide. Your page has a link to the PDF of the operating guide, but not a link to a PDF of an owner's manual. Are you missing that one, or would a PDF file be just too big for you to post? If don't have one but would like one, I can scan mine and send you a PDF. Just let me know the DPI resolution that works best for you. Keep up the good work! I enjoy your web site. Gary |
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September 1, 2010: Subject: DATA TABLE QUESTION My question is, What is the meaning of the term "Date of introduction" as used within the data tables for individual calculators? Does this mean the date the calculator was manufactured and available for sale to the public?If so, then what is the meaning of the term, "Date of manufacture"? Does this mean the date of manufacture of the individual calculator shown in the photo of the data table page? For example the TI-34 version 5 has a "Date of introduction1996", yet a Date of Manufacture of "mth 05 year 1998". I see numbers stamped on the back of calculators. I think you termed that a "Date code". I guess those are manufacturing dates? For example two I have here: TI-34 Multiview is stamped N-01 10C; TI-30XIIS is stamped K-0510M. Do these mean the first was manufactured in January 2010, and the second was manufactured in May 2010? Thanks for your assistance. I thoroughly enjoyed your Museum. It is excellently laid out, easy to navigate, and contains wonderful information. Kelly California, USA |
September 18, 2010:Hallo
Joerg, |
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September 17, 2010: Subject: SR-51 addenda for DataMath page Hi Joerg.I read your article on the SR-51 and thought that this might be a helpful addition for more easily distinguishing the earlier and later models of the calculator. On the the earlier versions the cancel exponent entry label (above the EE key) has an overbar over the EE text. On the later models the label has a slanted line striking through the text. Hopes this helps. Your Datamath web page is fantastic! Gary |
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August 21, 2010: Subject: TI-88 Hello,"I see one right in front of my desk - wanna buy it ?" - At the left of mine, there is a pretty TI Programmable 57. Almost the same, no ? Wanna make a exchange ? :-)) More seriously, many thanks for your answer... Now, I know where I can see my dream : just five hundred kilometers to Paderborn ! And I'm happy to know that four of them are in real Museums (including yours !). They will be preserved for years and years, not like some French computers (Squale, Alcyane, SOE, some Goupil, usw...) for example ! And one more time, thanks for Datamath's site and collection : all that technological history would be lost, without people like you ! Best regards, Denis |
August 22, 2010: Subject: Thanks for the Museum Hello,We landed on your site looking up some Ti numbers from papers in file cabinet. Wondering "What happened to . . .. or where's that one." I found on your site the SR-10, my 22 yr old, said "Wow, Grandpa bought that for $150!" Welcome to the US. I spent a couple years in Michigan, in the 70's. Now in Utah. Been here yet? Thanks. Best to you and family Mark |
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August 15, 2010: Subject: Speak & Spell - Chinese Version Joerg,Lot of effort gone into it, scanning, documentation, presentation etc. Your language usage in English is wonderful. Excellent presentation. Interesting facts about the toy!. Thanks and Regards, Rohit |
August 21, 2010: Subject: TI-60_US Manual Request many thanks for the manual - delighted to have this calculator back in service after finding it again |
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July 28, 2010: Subject: Longines Symphonette Electronic Calculator Greetings Mr. Woerner,I located your website and email through a BING search. You have an excellent website. I have a Longines Symphonette Electronic Calculator (serial: B1972) without the ac chord. I have attached two pictures and was wondering if you would be interested in it and/or what value this may have. Your personal story is also very interesting. Like you, my mother and father came to the US from Germany (1949). They settled in Queens, New York City where I also lived until 5 years ago when my wife and I moved to Hicksville, Long Island. Thank you for your time and I look foward to hearing from you. Sincerely, Thomas |
August 15, 2010: Subject: Item #130419056054 Instant payment received Joerg,I was hoping that this calculator sold tonight and I feel it's especially satisfying that you wound up buying it. I'm a longtime fan of your website, referencing it frequently. Thank you for the fast payment. I expect to get the mailing off by Tuesday, possibly tomorrow. If the postage is significantly less than that charged, I'll refund you via PayPal. You might also note that I just listed a Casio 121-A calculator. As described, it doesn't work, but perhaps you'd be interested. Howard Berger - 'emmyb' |
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July 25, 2010: Subject: Datamath Version 1 information HiThank you for the very interesting site. Here is the information for my version 1 TI Datamath. Serial Number: 2500-43822 Origin: USA MOS-IC: TMS0119NC Datecode: 7241 Mold: middle Owner: Wirerapper Do you happen to know how many Datamath's were produced? Regards, Wirerapper |
July 27, 2010:
Subject: Texas Instruments TI-1706 III
Joerg: |
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July 13, 2010:
Subject: TI-66
Joe thanks for the article. I bought my T I when it was introduced and
ordered my printer that day. I am a machinist and I looked at a kid I was
helping this am, asked him when he was born. He said 1987. I realized it
is time to quit. My TI-66 was older than him.
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July 15, 2010:
Subject: TMC0501 disassembler
Hello, |
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June 21, 2010:
Subject: Fan of your website |
July 11, 2010:
Subject: Question about my TI-30 III calculator
Dear Joerg, |
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May 25, 2010:
Subject: Rückmeldung http://www.datamath.org |
June 21, 2010:
Subject: Texas Instruments TI-1795 +
Hi, |
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January 16, 2010: Subject: Bug report Hi there, Great site! With plenty of info. Love it. Just to mention the hyperlink about the optional
full-sized QWERTY Keyboard on the TI-89 Titanium points to the HDD
local page instead of the actual web page... Étienne |
February 25, 2010: Subject: SR-56 Serial Number Hi, I have enjoyed your excellent and informative
website as I revisit my calculator hobby from the 1970's. My first
programmable was a TI SR-56 and I recently got one on eBay. Here are its
numbers for your database: SN: 088033 Thank you. Claus B. |
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November 17, 2009: Subject: question on guidebook Joerg -
It's
funny how just seeing those calculators from days past brings back
memories... Marcel
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - - - Hello - I was referred to you by TI. Would you by any chance have
access to an English version of this Thanks! Marcel |
November 28, 2009: Subject:
Hi
Joerg,
First of
all I would like to say I absolutely love your online museum, and I
can't imagine how much time you must have put in it, and probably still
do.
It's
great to see the history of these old calculators. I'm glad that you
make all the Texas Instruments information so easily accesible for
people like me. I have a
technical question about the Texas Instruments adapters.
I bought
some old TI calculators, of which a TI-1500 and a TI-58. Since I'm in
On your
site I see that the TI-58 needs a 3.3VAC adapter.
When I
look in my TI-58 I see a bridge-rectifier, so I assume that the
calculator changes the AC Voltage of 3.3 to a DC voltage of about 4V
internally.
It's
much easier to get a DC adapter with that kind of voltage. Am I right
when I say that I can connect the 4VDC to the adapter pins of the TI-58
to let it work?
If so,
does that apply to all TI calculators that need an AC voltage? Do they
all have an internal rectifier?
Thanks
and greetings,
Gerbrand,
The Netherlands |
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September 17, 2009: Subject: Item #180405908217 Instant payment received Joerg You're welcome! I had a
LC61t waaaaay back when they were new, and loved it.
Unfortunately, the LCD screen deteriorates if the battery runs down.
My 1st LC61t had the lower half of the screen dead. Since
then I've been to your museum site many times drooling over the picture
and narrative of the LC61t. Is there another credit card sized
calc/chrono currently on the market? I missed out on a LC61t a
number of months ago - I think you might have won that one on ebay.
I've also got another LC61t, but it's in rough shape, and also
displaying LCD problems. By any chance do you know how
or where I could get the LCD replaced? Best of luck on the online
museum - it's a treasure - I remember my 1st SR-50A as a new physics
student in 1975... those were expensive back then... to my TI
Business Analyst and TI-35 BA II, which I still use. No rush on
the shipping, I can wait. Just please protect the Canon - I'd hate
to have anything happen to it. Thanks again... and best of
luck! |
October 21, 2009: Subject: Texas Instruments SC-10 Scientific Calc Hello Joerg Very thankful for this opportunity and congratulations for the
excellent site Datamath. You are the best world´s reference in TI calculators. Best regards Carlos |
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October 2, 2009: Subject: TI-55-II Dear Joerg, |
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August 20, 2009: Subject: TI-30 Stat Calculator Hello: I just want to say thank you
so much for posting the manual for the TI Also, it's running on the
same battery that was in it when I bought it Deirdre |
August 20, 2009:
Subject:
RE:
http://www.datamath.org/Sci/Slimline/TI-30SLR.htm Hey! I still use my TI-30 SLR
and need to brush up on functions. I'm looking for a user manual
for it and TI doesn't have one online. They sent me to you.
Does an electronic version exist? Or are there other later TI's that
work like this one and I can use their manual? Thanks for the
help! Ruth Ann |
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August 10, 2009: Subject: TI BA-II data map Hello
Joerg, Thank
you for posting the information and photo of the TI BA-II calculator, I
purchased mine new as a college student I believe sometime in 1985 or
1986 and have used it nearly daily, if not weekly since that time.
It has the original batteries and I have worn the print off the keys so
I was glad to have the photo in order to pen the function key
information back on the calculator keys so that as I age, I can remember
what the keys are for in the computation functions. Kindly, Barbara Hubbard |
August 18, 2009:
Subject:
Joerg - Thank you so much for
getting back to me and also the attached file. I am in the mortgage
business and I like to switch around on my calculators. I found this one
recently in a thrift store. I put new batteries in it and it seems to
work fine. Thanks again! John A. Gregory
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August 15, 2009: Subject: TI-40 Solar Recently acquired a [Texas
Instruments Explorer Plus]. Made in I found a picture of it on
your site- THANK YOU! However, no instructional/owners manual.
If you can add it, I would appreciate it- it has keys I am unfamiliar
with. Some ops appear to be similar to TI-34, which I downloaded
from TI ED site. Thanks- you have a very
interesting site for a TI calculator fan! John Boggess |
August 10, 2009: Subject: TI BA-II data map Hello
Joerg, Thank
you for posting the information and photo of the TI BA-II calculator, I
purchased mine new as a college student I believe sometime in 1985 or
1986 and have used it nearly daily, if not weekly since that time.
It has the original batteries and I have worn the print off the keys so
I was glad to have the photo in order to pen the function key
information back on the calculator keys so that as I age, I can remember
what the keys are for in the computation functions. Kindly,
Barbara Hubbard |
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July 14, 2009: Subject: Galaxy 67 Joerg, Just
writing to say thanks for the Adobe document of the manual,
without which my Galaxy 67 would have been difficult to master. From, Richard Polley |
June 23, 2009: Subject: TI-60_US Manual Request Hello, Can you
send me a manual for the TI-60 Scientific Calculator? I need it
for an exam this week and I don't know how to use some features. Thanks Sandeep |
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January
24, 2003:
Joerg, |
January
24, 2003:
Just wantd to let you know that you have the best website on the internet about TI calculators. The information on Battery Packs and
Chargers are very helpful and I have reffered to your restoration Thanks for taking the time to provide people with
this great amount of knowledge. |
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January 24, 2003:
Just wanted to send you a
quick note saying I really enjoyed browsing your web site with the
extensive information on Texas Instruments calculators. |
January
25, 2003:
Hello, I'm collecting TI too and
actually have : I often back visiting your DataMath web site for references & beleive that You have the best TI calculator's Web site & its collection in the world. Congratulations & Thanks
for sharing your precious informations,
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March 22, 2004: Recently I found myself reminicing about the toys I had growing up. I was so pleased to find the TI site had exactly what I was looking for and then some. I had completely forgotten about the Little Professor calculator I received in my stocking one year until I visited the datamath section. I found it absolutely amazing and was very appreciative of the fact that you have sound clips from the original Speak & Spell, which again I remember playing with for hours. So I wanted to say thank you for bringing back the memories and to ask you if you might know where I could find these products now. Any information you have will be greatly appreciated. Thank you for your time.
Sincerely, |
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March 25, 2004: Dear Sir: My wife and I received an SR-50 calculator as a wedding present in 1975. I am trying to refurbish it and I found a great deal of useful information on your datamath website. I appreciate it. I am trying to locate a replacement for the AC9200 charger for this system. My local electronics store, Radio Shack, was very confused by the specifications for this charger. I would appreciate an answer to two questions: 1) Does the charger change 120V AC current to 8V AC current or 8V DC or, saying it in another way, does the SR-50 require 8V AC current to recharge its batter? It appears from the datamath web site that 8V AC current is needed. 2) Where can I purchase a AC9200 or equivalent? Are there any other suggestions you might have. The physical condition of my SR-50 is good, however, I have not been able to operate it in years because the battery pack died. The reconstruction of a BP1 battery pack on the Web site is very helpful. Thank, Alan A. Schreier PhD |
March 26, 2004:
I want to compliment you on
your very excellent site. It has historical significance. It
is a source of important info, such as- how to rebuild a battery pack!
Unfortunately many of these excellent machines end up in a drawer due to
bad batteries. I have obtained several fine specimens along with
bad battery packs which I will rebuild. My first calc was a SR-51A
for Engineering school (really wanted an HP-25) but the 51A proved to be
a better tool. I still have it in very good condition. I
have recently obtained several examples of the TI-59 Programmable and it
seems that they tended to have problems with the card readers. A
section on servicing the card reader mechanism would be helpful.
Maybe I can contribute my own experiences. |
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March 29, 2004: Hallo Herr Woerner,
vielen Dank für die
Informationen, die ich in Ihrem Calculator-Museum gefunden habe.
Mit freundlichen Grüßen |
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April 9, 2004: Joerg, Just a note to tell you what a nice web site you have for such seemly obscure desktop items as calculators. I did a quick search on the web for my trusty TI-5015 and your site came up on top. Actually as the only site for vintage calculators. My calculator dates back to 1980, when I purchased it new as a close-out sale from a local ham radio flea market. Used every year since, this calculator never ever skips a beat, and just keeps on working fine. I have no plans on replacing it, nor do I see a suitable replacement for it made today, with its no-distraction lack of digital display and its nice desktop size, keys and functions that make it the perfect accounting calculator. Best Regards Bill Greeley |
May 9, 2004: I just discovered the Datamath Calculator Museum site, and wanted to tell you how impressed I am with it. Great info on all those vintage TI calcs. I've used the site a lot when searching for calculators on Ebay to compare the features, battery packs, AC adapters, etc. On the Product Manual page, you ask for suggestions about what manuals to add. I need manuals for the TI-55 and TI-57 (in English). I've looked on the official TI web site but can't find them. So, there's a suggestion........... Thanks again for all your work on the Datamath site. Keep it up! Guy Nelson |
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October 15, 2004: Dear Mr. Joerg, First I want to thank you for your fantastic work with gathering information about Texas Instruments products. Even though I work on Texas Instruments Customer support and have access to different data bases I use your site on a daily basis to find information. I just discovered a small fault. The back up battery in the Voyage 200 is a CR1616 and not a CR2032. Thanks again for a very good web site. Malena Bohlin. |
October 16, 2004: Sehr geehrter Herr Woerner, mein Name ist Steffen Schöler und ich habe hier einen TI-30 LCD, der mit n! :-) ) von meinem Schwiegervater zu liegen. Die Tasten sind nur noch sehr schwer zu bedienen. Der Taschenrechner stammt aus seiner Studienzeit und er hängt sehr an diesem Stück. Wir, meine Frau und ich, wollten Ihm eine Freude machen und ihn reparieren. Ich war schon beim Uhrenmacher und habe auch schon mit Herrn Marcus Bering von Texas Instruments gesprochen, doch keiner wußte wie man ihn öffnen kann. Herr Bering meinte, Sie seien einer der Wenigen, der mir da noch helfen könnte: Wie kann ich den Taschenrechner öffnen, ohne ihn kaputt zu machen, oder reparieren Sie auch Taschenrechner? Über eine Antwort würde ich mich sehr freuen. Mit freundlichen Grüßen Steffen Schöler |
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October 30, 2004:
Hey, I had just purchased a TI-36X Solar before going to you site, and it raised a little interest to me about what are the real physical difference between it and all the other calculators with identical cases, like the TI-30Xa, BA35 Solar, etc. I bought the TI-36X even though I already have a TI-30X IIB, I wanted the extra functions of the TI-36 for my chemistry and science classes. It is a little frustrating not having that 2-line display considering I am used to my TI-30X IIB and TI-86 and TI-89Ti graphing calculators. I still need that pocket calculator like the 30X and 36X for some classes and labs. Anyway, your site answered some of my technical questions about the circuits and stuff. It is amazing the 36X I bought just now in 2004 is really the same as the 35X from 1991 nearly 14 years ago!
The log bug in the 36x I just
bought was news to me. Kinda freaky, we all just assume our calcs
are pretty much perfectly correct but apparently that is not always the
case. Interesting information, something I would assume could
cause problems for some people. I know to watch out for it if I
ever have to calculate the situations presented in the table. Good site, hope you never shut it down, and I hope you keep it updated like you have thus far. It is just neat to see the little technicalities behind the instruments we use all day everyday. Regards, J. D. McGee |
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December 17, 2004: Dear Joerg Just came across your calculator museum and the page on the TI-35 solar. You may be interested to know that I still use this calculator almost every day since I bought it new about 1985/86. It has been 100% reliable. Regards Alvin Enns |
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December 17, 2004: Hallo Jörg, BOOOOOOOOAAAAAAAHHHHHHHHHH !!!!!!!!!!!!!!!! Ist das eine geile Seite !!! Ich bin noch nie mit so vielen Informationen über Taschenrechner konfrontiert worden wie auf Deiner Seite. Vor allem ist die ganze Sache auch noch saumäßig interessant. Ich habe zwar nur einen Hand voll TIs aber ich bin seit 15 Minuten am lesen und am Unterschiede finden und muß mal zwischendurch die Info ablassen. GENIAL, KOMPLIMENT !!! Wirklich saugeile Seite !!! Grüße Herby |
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March 10, 2005: Hi, You have a fantastic site, and a very useful resource. Don't worry, I'm not trying to scrounge a link exchange! I have just obtained a TI Little Professor, mainly for my daughter to do a bit of arithmetic practice (using retro technology of course!). It is the 1982 UK model, and I was hoping to download the manual from your site, but the link doesn't work. Thanks again for providing a terrific and valuable site. Regards,
Bill Ayers |
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February 10, 2005: Hi Joerg: I just want to thank you so much for maintaining this TI museum. I'm a CPA in New Jersey and the 18 year old extension of my right arm know as the" TI-5160" was beginning to die last month. As I'm sure you know, TI exited the desktop printing calculator market a few years ago. I wish I could find a old "new" one, but I was not having much luck hunting. I settled for a Canon from OfficeMax and was not happy with it's "feel" or any other ones out there in the current retail market. After finding your site, I was able to identify some old model numbers from the late 90's that would suit me and searched the Internet for one, new or used. I could not find the TI-5660 I wanted new, although oddly there are people fighting over used ones on Ebay! Can you believe it! Eventually I found a "brand new" (old stock) TI-5640 (an LCD model made in Thailand) on Amazon that was not listed there a few weeks before. Could you believe it was being sold by some company only a few miles away from my office. It came yesterday and I was so thrilled I immediately ordered a second so I could put it in deep storage in case the new one ever fails. ( he's still got 2 units left!) So thanks again. I see that you are missing your TI-5640 photo on your website. So the least I can do is e-mail you the photo if you'd like. If your collecting I'll give you the link to where you can buy your own (good luck on the shipping to Germany). Regards, Fred N Boehm, CPA |
March 21, 2005: Dear Mr. Joerg Woerner, I recently visited your DATAMATH CALCULATOR MUSEUM webpage. What a fasinating page for someone who grew up in the 1980's. I wanted to know more about the Texas Instruments Speak & Learn Magic Wand. I was given one as a child, while it's not in the condition that it was in when I was five I would like to get a old memory out of it. I no longer have any books for it so I can't tell if it still works. It powers up with that pleasent greeting, but that is all I can get out of it. I originally had the Talking E.T. Wordbook infact I learned to spell my first word with it. If you have anymore information on this unit please write me back. Sincerely, Otto Bismark |
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April 24, 2005: Hi Joerg, many thanks for information about cleaning! To collect calculator i go into your museum and my referement was scientific calculator until ti 59. In several cases i have more than one because not alvays quality is good for me. In the next days i will begin selection to obtain better result. The best congratulations for the work you made in the years to collect a big mass of information about TI calculator. It is very great!!!!!!! alberto |
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April 29, 2005: Hello again Joerg, I wanted to personally thank you for all the valuable information you've placed on your Datamath website. Until recently, I hadn't needed to take advantage of it. I bought a couple TI-55 calculators dirt cheap, not knowing whether they worked or not. I'm generally an HP/RPN fan, but the ol' TI-55 is special to me because it's the first calculator I had in high school in the '70s. It was stolen at college and I bought an HP-15C to replace it. If only I had checked your website sooner - it would have saved me a lot of fiddling around with a multimeter and a power source, trying to divine the inner workings of the BP-7 battery pack. The AC9132 adapter I have is toast, so being used to HP adapters I blithely soldiered on assuming the 5.7 volts output listed on its back was *DC*. "Gee, that capacitor sure is getting warm on the little circuit board..." Fortunately I didn't fry anything, and my brief experimentations determined that both TI-55's were operable. Not having a proper adapter, I'll probably just install a 9V connector in each calculator and use disposable 9V batteries. I'll watch out for the possibility that red=negative, as you've noted! Regards, Doug Trader |
April 30, 2005: Hi there! I was doing a google search in a frantic effort to locate a guidebook for my old calculator and happened across your site. I am amused to think this old thing is a collector now! The amazing thing is, it is still running on its original batteries!! Some of the buttons are worn off, so thanks for the picture posted to remind me. Got any ideas on what kind of paint I can use to mark them again? I haven't used this calculator since college in 1988 and I've recently enrolled in school again and had to dig it out. Anyway, I just wanted to say hello and that my old relic is still going. I may replace the batteries this weekend, it seems a little sluggish and I have a midterm on Wednesday - don't want to take any chances! Ciao, L.J.M. |
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June 6, 2005: Hi there!
Thanks a lot for putting a
picture of the Texas Instruments TI-34 calculator on the web! Mine
stopped to work after I passed it on to my daughter. I was a bit sad
because there is no good replacement available these days (10+2 digits,
works well in low light). So I took it apart and could indeed fix it.
But I would not have been able to put the keys back in their right
places if it hadn't been for your picture :-) |
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June 27, 2005: Speak & Spell: Datamath Calculator Museum In jahrelanger Sammel- und Dokumentationsarbeit hat Jörg Wörner das Datamath Calculator Museum zusammengetragen. Hier werden hunderte Taschenrechner, von den ersten Texas Instruments Datamaths aus den ganz frühen 70er Jahren bis zum Mickey Mouse Rechner aus den 90ern, ausführlich vorgestellt. Besonders spannend finde ich die Abteilung Texas Instruments Speech Products. Hier räumt Jörg nämlich ganz nebenbei mal mit ein paar Mythen der Popmusik auf: Die von Kraftwerk auf dem Album Computerwelt / Computerworld verwendeten “Roboterstimmen” sind nicht etwa selbstgebastelt, sondern stammen aus dem Chip des TI Language Translators von 1980. Auch die Speak & Spell - Spielzeuge (Foto) haben Spuren in der Musik hinterlassen. Wie auf Gesamtkunstwek von Dopplereffekt finden sich auf unzähligen Electro-Releases Speak and Spell-Synthese-Samples. Und dass das Depeche Mode Debut Album von 1981 ebenfalls Speak and Spell heisst, ist wohl auch kein Zufall. |
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June 5, 2005:
Super
das Sie den Galaxy 40 so ausführlich bescheiben und noch ein Pdf zum
downloaden haben. Ich nutze ihn regelmässig und besuche zurzeit eine höhere
fachschule und muss noch einige zusätzliche anwendungen wissen, so kann
mir ihre Seite zugute.
Mit
freundlichen Grüßen
B.Wyss |
September 1, 2005:
Hi! |
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September 12, 2005:
Your speak and spell page
simply rocks on toast! Roger |
September 11, 2005:
Hi, |
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September 14, 2005:
Hey, Joerg, |
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September 23, 2005:
Hello Jörg, |
November 3, 2005:
Hi Joerg, |
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September 23, 2005:
Thank you and Texas
instruments for the information on this product. I have the Speak
& Spell and Speak & Math I bought for my kids in the 80s and now
my grandchildren will use them. I needed to find out which AC ADAPTOR
was used with these products. Your site was given to me by Texas
Instruments and was very useful in obtaining my answer.
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December 19, 2005:
Hello, Joerg, |
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January 20, 2006:
Dear Joerg, |
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January 22, 2006:
Hello Joerg |
January 23, 2006:
Hi Joerg, |
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February 2, 2006:
Hi Joerg, |
February 3, 2006:
Dear Joerg, |
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February 17, 2006:
Hi Joerg |
February 8, 2006:
Dear Joerg Woerner: |
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February 9, 2006:
Good day Joerg, |
March 25, 2006:
Dear Joerg, The SR-50A was my first scientific calculator that I used during my studies in the late 70s. So many memories...
And now it works again.
Really great. Many thanks again!!! |
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March 25, 2006:
Good morning, |
April 4, 2006: I just wanted to say thanks. My father had a TI PS-2400 data bank I found while packing up the old house. (He passed away a couple years ago and we have now sold the old house)
I could not find any info
about this thing, TI dosen't even have any, and was going to just throw
it away. Then I found your site and was so pleased. You even have the
user guide! I know it is not worth any money and it is old school low
tech but hey, waste not want not. Even if the kids just use it. |
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June 4, 2006:
Just wanted to offer my
sincere thanks for your awesome webpages on TI battery packs. |
May 1, 2006:
thanks!!!!!!!!!!! |
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June 14, 2006:
Thank you for putting manuals
on line. TI website did not have my manual for my TI-34 and I did not
want to go out an buy another calculator just because I forgot how to
use it. |
September 2, 2006:
Dear Joerg, |
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September 12, 2006:
Hi, I was browsing
through the museum and came across the calculator I still use to this
day, the TI-36 Solar. This calculator has been going |
February 3, 2006: Great website……. I have always hoped to find a way of replacing or rebuilding a BP1a battery pac for my SR 52. Thanks for all the great information and work placed into the site!
Haile
Macurdy |
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February 4, 2007:
Subject:
BA-35 legacy manual, THX!
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February 4, 2007: Hello again, I forgot to say: Thank you for maintaining such an interesting site! :) All the best, -Daniel. |
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February 16, 2007:
Goede
Dag, de Heer, Ik denk wij kort sommige jaren geleden correspondeerden.
Op dat ogenblik, herinner ik aan het vertellen van u hoe prachtig en
uitstekend uw datamathplaats is.
In vrede,
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February 22, 2007:
I wanted
to look up information on my trusty TI-35X, which serves my limited
needs as a web site designer, and found your site, and not only got the
manual that I wanted, but a wealth of other information as well about
the calculator, it's history, chips, etc. Having my first degree in
Classical Civilization (AKA - History in a dept separate from the
History dept.), I'm always interested in history, especially 'anonymous'
histories of the technical aspects of our lives - like the history of
the bath, irrigation systems or the mechanization of death
(slaughterhouses) - stuff like that. |
February 25, 2007:
Joerg -
I must say - You made my day!!! Thank you. The timing was
outstanding and I had really not much optimism remaining as far as
getting a TI-5038 Manual.
I'm
somewhat compulsive-obsessive when it comes to having instructions for
anything mechanical, electronic, or organic. I truly believe when
all else fails, read the book. Actually, when possible, I read
before starting with anything new.
Again,
thank you for your efforts - what you do is very much appreciated.
Bob
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February 25, 2007:
RE:
http://www.datamath.org/Sci/Modern/TI-30Stat.htm
Thanks
for the manual link !
I just
replaced the batteries in my TI-30 Stat for the first time, and
hopefully it will last another twenty years. best
regards,
Andrew
Webb |
March
30, 2007:
Hello, Thank you very much for making this
site on the internet. It was very helpful for me. I needed to know what batteries i have
to by for my TI 30. Greetings from Annie in Holland.
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June 10, 2007: Hi, Your website is great. It's an invaluable calculator information resource. I just picked up the latest version of the venerable TI-30 the TI-30XS Multiview. It's great to see this further refinement of this class of calculator. When will you update your website to include this new version of the calculator? What I would really like to see is for TI to release a modern non-graphing programmable calculator. The graphing calculator is also well past due for an overhaul. I'd like to see a brand new model incorporating a modern higher resolution LCD display, a fast RISC processor, and plenty of flash memory. Wireless connectivity would be nice as well. (Bluetooth anybody?) Regards, Barry Reeves
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June
10, 2007:
Subject: TI-60_US
Manual Request
Please e-mail the
English manual for the Texas Instruments TI-60 calculator if available.
Thanks, Jim Risoli
June 15, 2007:
Joerg
Thank you VERY,
VERY much. I have been searching for this for 2 years. It is greatly
appreciated. Jim Risoli
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June 26, 2007: Subject: HELP WITH BA-II FOUND USER GUIDE ON YOUR WEB SITE!!!
TI
RECOMMENDED YOU. WHAT A GREAT SERVICE YOU PROVIDE. THANKS.
LAND
COMPANY OF MICHIGAN - COMMERCIAL REAL ESTATE LOGAN |
August 15, 2007:
Hey there,
I enjoyed reading
a lot of your TI calculator web museum.
Except
maybe for the part where you mention that TI replaced TI
Anyway,
one thing I don't seem to see on the site is an explanation
On the
keyboard bounce problem, often one of the first keys to go was
I'm sure
I'm not the only one who came up with the work-around of
Steve Wahl |
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Subject: Geat Website
Was
looking up info on an old calculator I've had for 30+ years but
R.
Bradford |
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July 25, 2007: Subject: TI-60_US Manual Request
Dear Mr.
Woerner,
Thank you so much for your
prompt response. I really didn’t even expect that the site was still
manned, so it was a really wonderful surprise to receive the PDF. Thanks
again for your help!
Sincerely, Genny Dalton |
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August 31, 2007: Subject: TI-1100
Dear
Joerg,
I have
checked your website
http://www.datamath.org/BASIC/LCD_Modern/TI-1100_2.htm Good job with the
info!
Alex |
October 9, 2007: Subject: TI-60_US Manual Request Could
you help me learn how to calculate and use the functions nPr and nCr?
I need to use them for my Stats class, but do not know which buttons to
push.
Thank
you, Lynn
October 9, 2007: Subject: TI-60_US Manual Request Thank you so much! You have helped me tremendously. |
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October 10, 2007: Subject: Thank you! Could you
Thanks
for putting together the great site with the old TI calculator
Thanks!
|
October 28, 2007: Subject: manual for TI E-2000+ What a surprise; Let's call it miracle, superpro, or ultimate database, who can tell... A million thanks! If I can help provide datas or devices to your datamath, I will; To start with, this calculator E-2002+ is yours, as soon as I replace it! Just give me a postal address to send it to when is the time. Thanks again, Mfg Thierry |
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November 11, 2007: Subject: Thanks
After 20-years of daily
faithful service, the ORIGINAL batteries in my TI-BA-II Business Analyst
calculator died. After replacing them I couldn't remember how to set the
number of decimal places (since I hadn't changed that function in nearly
20 years). If it wasn't for your web site, I may have had to replace the
best calculator I've ever owned. Thanks for maintaining this data base
of information.
Sincerely,
Ken Cass |
November 20, 2007:
Thank
you so much for your article on the Texas Instruments BA-35.
We still
use ours, but had lost the manual. With your help, I found the
manual and was able to figure out what was going on! 20 years, or so,
and still working on the same battery. Paula Nelson |
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December 5, 2007:
Thanks
for posting on the Net all the info. on the Texas Instruments
calculators.
I have a
ti-36 Solar and I have lost the booklet. I have found one on your site. Thanks again. Have a nice day.
Carl |
November 22, 2007:
Hi,
I just
wanted to say, awesomely put together and very well done. Good
work! Dave |
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January 22, 2008: Subject: Your site
Just
came from your site. It was great and just what I needed.
We have
this TI Hot Calc calculator that surfaces every now and then around
here. The decimal point is completely worn off, the minus sign is well
on its way as are the 1 and 4. 0 is on it's way as well as
fading/scraping marks are showing on the top row function buttons.
This
past year whenever I happened to pull it out, push the ON button
and it worked, I was amazed and wondered just how old it was. This
morning I decided to try and find out. I started out searching the TI
site to no avail. After several google search inputs I found your site.
YIPPEE! There it was. I remembered being in Wal-mart purchasing
this calculator for one of our daughters, but couldn't even come
close to remembering what year. I guess I could have come close on paper
after a lot of calculating this and that (LOL), but that would have
taken forever.
Thanks
to your diligence in cataloging these calculators, I found out that our
Hot Calc will be 14 years old this year. I used it again just this
morning to figure a book order amount for our youngest (16 yrs).
Over
all, this is the best, cheapest, basic calculator I have ever
purchased.
Thanks, Susan |
November 17, 2007: Subject: Texas instrumenst TI-60
Hello,
I have a
texas instruments ti 60. In my class everyone has this very common
I press
a number that is n and then i do second and equals button, and then
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February 11, 2008: Subject: TI-7000
My TI-7000 has been in constant use
since I purchased it, probably in 1992. It fitted perfectly into my
wallet, was protected by its vinyl cover, and I'm sadly searching for a
similar replacement since the LCD display has become eccentric! I
love this calculator and was thrilled to see it described in my Google
search. I'd love to find one in decent working condition, and it will
probably outlast my eighty years! Barbara |
February 16, 2008: Subject: Business Analyst I
Joerg,
Thanks
very much or your information on my Business Analyst calculator.
It does still work, I had just forgotten how to use it. After
reading the manual from your site it was easy!
That is
an amazing site you have. You must have spent a great deal of time
compiling the entries.
Thanks
again for the great help you gave me. I sincerely appreciate it.
I used my Business Analyst when I brokered real estate here in
Houston in the late 70s. It was a great boon to us real estate
people as up to that time we had to calculate amortizations using
factors to multiply times dollars. With the touch of a few buttons
we could tell how much a person could borrow or what the monthly payment
would be on any loan. I loved that little machine. John
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February
11, 2008:
Joerg,
Don't know if you
recall, but I bought the User's Manual and Application Guide
from you a few months ago for the TI Financial Investment Analyst. Len |
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May 7, 2008: Subject: TI-60_US Manual Request
Hello, Thank you for having the manuals
available. My wife works in a lab and they retired the calculator
for a newer one and it’s becoming more obvious that I need one at my
work but she does not have the manual. Any info will be greatly
appreciated.
Thank you, Len |
May 7, 2008: Subject: Where can I find a workable TI-59C simulator on my Windows XP?
Dear
Joerg
Thank
you for your help, and hope that there will be more and more people get
to know this amazing programmable calculator !
Do
keep in touch
Kind
regards
John
Ho |
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May 20, 2008:
Subject: TI-1500 S/N 109708
still in use
I thought it might be of
interest to you, that one of your TI-1500's was still in use.
It was purchased in the mid
seventies, at the Broadway dept. store in West Covina Ca.
The charger no longer
works, the on/off switch has intermittent contact problems, but it just
keeps on chugging along. this is not a seldom used unit, but one that is
used on a regular basis.
Congratulations to TI for
such a fine piece of workmanship Thank you, Lee Bryant |
May 21, 2008:
Subject: Thank you
Dear Mr. Woerner, Thank you very much for your
wonderful Datamath museum.
I especially enjoyed your
reminiscence about your letter to TI about the broken IC in the dice
circuit. Today we often are oblivious to the ways little events
can have big effects.
Best regards, Keith |
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June 14, 2008:
Herr
Woerner: Thank you so much for your prompt attention to this auction. I will leave you positive feedback as soon as the Galaxy 67 arrives.
Thanks
also for all the hard work you do at datamath.org. It is a wonderful
resource for the TI collector.
Sincerely, Jesse Dodd |
August 31, 2008: Subject: The TI-5100 (circa 1976)
Sir:
While I
was doing some research (for personal interest) I came across your
web-site page for the TI-5100. I found
it very interesting in respects to what I was "snooping"
around for.
Your
site has essentially answered my query, which is thus: what model of
Texas Instrument's calculator was used in the 1977 movie "Damnation
Alley" as a prop for their GPS system. I've included a screen
shot I took of it as well for you to check out.
I'm
reasonably confident from the colours of the product, and of the sample
you are showing, that they are one and the same. While confident I am
not 100% sure though.
I would
be interested in knowing if you agree with me. If you could take the
time to look at this screen shot I would appreciate it. For what ever
it's worth, the reason I'm looking at this is that I am transferring
this movie (a TV copied version) and I am putting it on to a home made
DVD. Because I am a huge fan of this movie, I am attempting to create a
DVD with today's style to it,. By this I mean I am putting on my own
"Trivia" section, a "Biographies" section, and so
forth. While not critical to my little home project I am still,
none the less, curious to see what you think.
Thank
you in advance for any time you may put in to this. And yes, I found
your site to be really neat and interesting. Albeit a bit scary since it
really dates me some what!
Sincerely:
Kevin
Gaus |
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September 01, 2008:
Subject:
Speak & Spell Sample
Hi
Joerg,
My name
is Tracey & I work with a small record label based out of
Recently,
we began a monthly podcast that features local music. Since then,
we've been working to create an intro for the show, but are missing one
important element for us. First, I
would like to say thank you for posting the abc mp3. It is
extremely helpful to what we are needing. Nothing a little cutting
can't accomplish. I was hoping, however, that if you have the
time, you could pass one more sample on to me. All I am missing at
this point is the word "radio". I've been searching all
day to find a sample app that would let me do it myself, but there
doesn't appear to be anything out there & I don't have access to a
Speak & Spell myself.
I know
that's alot to ask someone whom I don't know, but desperate times... Thank
you again for the post! And thank you for your time.
Take
care, Tracey
Anderson |
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September 03, 2008: Subject: Thank you for your wonderful suite, which I discovered... Following a picture link from an ebay seller!!!
Although
I agree with you 100% about copyright infringement and
You are
doing a great job and I am truly grateful for it. I've learned
I
remember my first calculator, it was a Commodore that could only do
Those
that could do sine, cosine and tangent were the equivalent of
So,
thank you for your care and dedication, keep up the good work, it
Chris in
Canada |
September 07, 2008:
Subject:
Dataman Hi, Just wanted to say thanks for posting the manual; In cleaning up found our children's old one - still works. Best Dick Whalen
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September 09, 2008: Subject: Datamath Website Wow! I think that's a great website. It has an easy-to-read layout, plenty of helpful specs., and interesting comments also. I looked up a TI-60 (1st run) and a TI-30 SLR. Now I know how old they are, what they cost, and some fun factoids about each.
I am
dismayed, however, to see your note about auctioneers and thieves.
I agree, what is so hard about sending a request-for-use email.
You've obviously put together a great website, great enough for them to
link/copy, so what's so hard about some extra keystrokes? That's
too bad; do keep up the stellar website, and I know where to go
for the next "antique" I encounter.
Thanks
Russ |
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September 30, 2008: Subject: TI-35 Plus
Thank you for the manual
download for the TI-35 Plus. I handed mine on to my son to use for
class. It still works great. Can't remember the last time the battery
was changed.
John Jensen |
October 2, 2008: Subject: TI-84 Plus Clear Case
Hi, I
love your website (those old calculators are really cool).
I just
noticed that you've forgotten something: the TI-84 Plus Clear. It
is packaged exactly the same as the TI-84 Plus, the only difference
being that the case is clear. I believe the hardware is exactly
the same. Unfortunately I am unable to include a picture but you
can probably find better pictures on the Internet anyway. Here's
one: http://ecx.images-amazon.com/images/.
-Jason |
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October 4, 2008: Subject: SR-56
Just
wanted to give you details of 2 TIs that I just found in a boot
sale:
TI SR-56
serial no 118822 LTA 3676 complete with box, sales receipt and all
paperwork. Condition A
TI SR-40
serial no 2534291 LTA 3077 Condition A
Keep up
the great work with your site.
Regards.
Gavin |
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October 7, 2008: Subject: Website praise Wonderful
website keep it up thanks for the article about the ps-6200
Sent
from my iPod |
October 25, 2008: Subject: Thanks
Your
site calculators and ps6600 to save my life.
I want
to be rich and for you 1000000 good man.
1000 000
Thanks for you…
Pablo. |
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November 2, 2008: Subject: Texas Instruments Programmer II
Fantastic
reference...I remember buying mine in NYC.
http://www.datamath.org/Sci/Slanted/Programmer-II.htm
Kind
regards,
Mark |
November 8, 2008: Subject: TI SR-56
Your
Datamath site is perfect... with many many very good informations,
pictures etc about calculators...
I'm old
computers, consoles and calculators collector from
I see
you have a list of users of this calculator. My is assembled in
Best
regards
Tihomir
Santek
Croatia |
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November 8, 2008: Subject: Another SR56 owner comes forth
I saw
your website and was glad to see there are other SR56 enthusiasts out
there. I purchased mine some time during my senior year
(1976 to 1977). It stayed with me all the way through Electrical
Engineering Graduate School. The next time I talk to my old
college roommate, I'll ask him if he still has his SR56. I
still have the calculator today and it still works (I fired it up last
night)! I am also an avid Linux User and recently observed
that one Distribution of Linux had an emulator for the TI-59.
Here are
the particulars about my calculator:
Serial
Number: 177154 LTA 0677
This
Unit DOES NOT have the wording 'Programmable' I
appreciate you adding me to your online database.
Sincerely,
David
Ribera |
November 9, 2008: Subject: Touch & Tell
Dear Mr.
Woerner,
I found
your site via a Google search and must say I never would have imagined
someone would have went to such detail on this product, kudo's!
I have a
unit complete with modules that was my daughters from what seems a
lifetime ago and wish to auction it off on eBay.
My
question: I would like to know if I may have your permission to
add a link to your site in my auction, for description purposes only, as
the pdf files and descriptions that you've given are second to none.
I
noticed the copyright at the bottom of your pages and wish to respect
and honor that.
Thank
you so much for your time and hopefully understanding.
By the
way, my unit works great other than the Off feature doesn't work...ugh.
Took it apart but see no evidence of broken wires or such, all the
modules work fine and the on button works, just the off button doesn't
work. Beings it's over 20 years old and used, I suppose it's to be
expected.
Best
regards, Tom Terezakis |
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November 17, 2008:
Your
website is very helpful and informative and is full of Interesting
facts. Thanks For sharing it with us.
Joshua
PS Why
does www.datamath.net only show the This is the end of the Internet.
Don't all your manual files link from there?
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December 9, 2008: Subject: TI SR-50
Hi Joerg
Just
wanted to thank you for posting the information to repair the battery
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December 10, 2008: Subject: Another SR-56 Calculator
Hi,
In my
travels I picked up an SR-56 very good condition complete with battery
charger.
The
numbers ar as follows:
The unit even
has with what appears to be an original (?) battery that holds
a short time charge when unplugged!
Please
note my original SR-56, which you have listed on your site is still in
my posession and I am the original owner.
That
original unit has serial # 067219 and and LTA 4176. I still
have the original manual for this one with the purchase date of Jan
1977. (This calculator was bought for me by my aunt Rose for my Physics and
Astronomy Classes at the
For the
record both of these calculators do not have the words Programable on
the front cover. The back does state "Texas Instruments SR-56
electronic programable calculator."
Thank
you for a wonderful site!!
Al
Paslow |
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December 27, 2008: Subject: Thanks Joerg, |
January 7, 2009: Subject: TI-60_US Manual Request Greetings, I ran
across a TI-60 calculator in a desk drawer as I was cleaning out a space
to work in our lab. I replaced the batteries and have it powered up, but
I am hoping to obtain a complete user manual in English. I downloaded
the Quick Reference and that has helped greatly. Any
information you can provide will be greatly appreciated. Jeffrey
Rockel |
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January 8, 2009: Subject: Help identifying a calculator Mr.
Woerner, This is
strange but I was hoping you could help me track down a calculator I
remember using around the mid-1990s time frame that was made by Texas
Instruments. I do not believe it was new at the time. It had a
silver-colored case; it may or may not have been metal, a tall LCD
display and, the feature I most enjoyed, commas that would be inserted
into the display where appropriate. I do not remember for sure if
it was solar-powered or not. It did have a black or dark blue
folding cover. After
looking through the Basic Calculator section of your website I find that
the TI-1766 III seems similar, but I don’t think it is it. The
buttons do not look the same and I just remember the display, buttons,
solar cell (if equipped), etc. being very uniformly spaced. The
other feature that may narrow it down, as I said, is the comma feature
and tall LCD display. I
don’t know if all the features I mentioned existed on a single
calculator but I am very sure of the basic silver-color and commas. Thank
you, Josiah
Rojas |
January 25, 2009: Subject: TMC1503NL Hi Joerg
, bin grad verzweiffelt auf der Suche nach nem PINOUT für den Kannst
mir da behilflich sein ? Vielen
Dank und Grüße Marius PS. Übrigens
eine sehr interessante und schöne Seite , gratuliere. Wenn |
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January 28, 2009: Subject: great website Great
website. I grew
up using the Galaxy and TI-34! I currently am using the TI-30X IIS
and the Sharp EL-733A. Keep up
the good work! Kevin |
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February 17, 2009: Subject: your calculator museum! I love
it! I was googling the TI-1795 because I wanted to see if it was
still being made, and lo and behold I ran into your website! I had a
blast looking at the calculators--especially the educational ones, as I used to have
one as a child (and now have no idea where mine went---wahhh!) I love your website! I hope you get a lot of fan mail on a regular basis because it is people like you who make the web a fantastic place to be! Keep up the great work! I'm
bookmarking your site! Victoria
K. Boston MA |
March 19, 2009: Subject: Dickes Lob ! Hallo Jörg, man
googelt mit dem Ziel mal ein bißchen was über alte Taschenrechner zu
finden und dann lande ich auf Deiner Seite.Was mir da zuteil wurde hat
mir fast die Sprache verschlagen. Eine
solch Top recherchierte und informative Seite zum Thema hätte ich nicht
erwartet. Äußerst
interessant finde ich auch die Pics vom Innenleben der Rechner, ja oft
sogar verschiedener Revisionen. Eine
tolle Arbeit die Du da abgeliefert hast.Die Seite ist sofort in meine
Lesezeichen unter Retro-Technik gewandert. Wünsche
Dir und Deiner Familie sowohl privat wie auch beruflich alles Gute und
nochmals Danke für die tollen Infos! Grüße
aus NRW |
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March 19, 2009: Subject: TI-30III Hi Joerg Great
website. I was looking for a manual for my TI-30III ( Best
wishes Graham
Subject: RE: TI-30II Hi Joerg I missed
the download page as I came into your site on a different page. The site
is even better now!! Many
thanks Graham |
March 19, 2009: Subject: Perfect Dear
datamath-calculator-museum, Greetings, I love your datamath website. Truly a great place to learn about these wonderful machines. Thank you for the work you have put into it! Kind
regards, Al |
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March 29, 2009: Subject: Calculator - Toshiba SLC-8260\ Dear Joerg, I found
your website when looking for details of the above calculator. I was
given this by a Japanese friend, Prof Yoshio Nishi, when he first
visited me in My
friend now has a senior academic position at Thank
you for such a useful site. Aufwiedersehen! Bill |
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March 29, 2009: Subject:
Dear
sir: I came
across your website by accident during my search for information on an
old BA-II calculator that my wife has. Recently, when she tried turning on the calculator, the unit did not respond, so my first reaction was to replace the batteries. That
worked, but when it was turned on, the decimal point seems to have
disappeared, and the display looks like it rounds the results to whole
numbers. Is it
possible that you might be able to provide information on how to set-up
the display to show either a specified fixed number of places or even a
floating decimal?? I have searched all over the web, and have thus-far been unable to find any user information on the BA-II. I would love to be able to download the owner’s manual, but I’m afraid that that is another elusive item for this antique. Any
assistance or direction that you could provide would be greatly
appreciated. Regards, Jeff S.
Jeff, Here we are: http://www.datamath.net/Manuals/BusinessAnalyst-II_US.pdf Enjoy, Joerg
Joerg- Thank
you very much!!! Your
link gave me all that I need. I
appreciate you taking the time to respond. For your
information, I am in Out of
curiosity, where are you located? Thank
you again, Jeff |
April 03, 2009: Subject:
Dear
Joerg I have
recenty purchased a Texas Instruments TI-59 calculator securely fixed
with a PC-100A printer. Unfortunately I don't have the key to unlock the
device. Do you
have any experience with the keys, the lock and unlocking without the
original key. Everything
works like a charm and the calculator is in the best shape. I would
however very much like to be able to lock/unlock like it's supposed to. The
Texas Instruments customer support directed me to your website. I hope
that it's not too much of a bother. Kind
Regards Peer Denmark |
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May 24, 2009:
Subject:
Dear
Joerg, Thank
you for establishing this website! Even though it would have cost
me about $11 to buy a ti 30 xa, and replace my still functioning ti 34
from 1990's, finding the instruction manual on your website helped me
work my old one for school (college chemistry). I don't mean to
sound cheap, just thrifty, but I just couldn't bring myself to
dispose of it, knowing that only if I could find the instruction manual
then I can use it again for class. And then your website
came up on my search engine! So
thanks again. I will certainly pass on your websites address to my
friends, b/c my thinking is when you have good thing, like the ti
scientific calculators, why upgrade? The older version of ti 34
has not failed up till now, even the batteries are still the original
ones! I am a true and committed consumer of ti calcualtors and now a client
of your website! God
bless, R.B. in |
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May 01, 2009:
Subject:
Joerg I want
to thank you for your web site it brought back a great deal of
memories.. At the time of the Avstar introduction by
Jeppesen Sanderson, I was a warehousemen for a Company named
Cooper Airmotive at the It was
around the same time of the I
demo’ d and introduced the first Avstar in the Later
Cooper Airmotive became Aviall Thanks
Ron |
May 11, 2009:
Subject:
Hi Joerg, I was
just on your incredible website. I am trying to solve a problem Do the
TI-30X iib's work in a different way from the older models, such as In other
words, do you have to enter your data in a different sequence I can't
remember exactly which functions required that you had to excess via the
secondary function key on this mystery calculator I was using. I I have a
30xa, and this newer looking calculator that I had to use worked Also, do
you suppose I was using a 34x and not a 30x? Probably not? Also, I
could have sworn it had a c in the model name, but I have been Also, do
you now if the 30x models with the multiview operate in this Thank
you for your time, R. Wiser |
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May 16, 2009:
Subject:
Dear
Joerg I was
the proud owner of a TI-36X solar which had served me well, alongside http://www.datamath.org/Sci/Modern/TI-36SOLAR.htm ***************************************** Dr. Jose
M. Bielza |
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If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, 2005 - 2016. No reprints without written permission.