DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-2400 Phone Bank
| Date of introduction: | 1987 | Display technology: | LCD |
| New price: | Display size: | 7 char + 12 digits | |
| Size: | 2.5" x 4.0" x 0.4" | ||
| Weight: | 2 ounces | Serial No: | |
| Batteries: | CR2016 | Date of manufacture: | mth 09 year 1989 |
| AC-Adapter: | Origin of manufacture: | Taiwan | |
| Precision: | 8 | Integrated circuits: | Toshiba T9752, Sanyo LC3518 |
| Memories: | 2.85kB RAM | ||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manual: | 
(US: 1.700 kB) |
Texas
Instruments introduced in the year 1987 this powerful Phone Bank. The memory
capacity of 2.85k Byte RAM holds as much as 150 names and the associated phone
number, anniversary date or similar.
In the calculator mode the TI-2400 Phone Bank provides the four basic functions and a memory.
Main
disadvantage of the TI-2400 is the small display.
The
internal construction of the TI-2400 is typical for the whole line of TI
organizers. A 8-bit microcomputer system based on a Toshiba microcontroller
surrounded by 8k RAM. A similar construction was later used with the TI-2100
Pocket Info.
The TI-3100 Pocket Dialer combined the Databank feature with a small loudspeaker to generate the multifrequency dial tones.
Texas Instruments launched in 1987 a very innovative product line with the TI-2400 Phone Bank, TI-2600 Personal Banker, TI-2700 Mini Data Bank, and TI-2800 Paperless Printer followed till 1990 with the TI-2100 Pocket Info, TI-2900 Info Bank, TI-3100 Pocket Dialer, TI-3200 Pro Dialer, and TI-3400 Europa.
If you know the history of Texas Instruments it seems to commemorate the introduction of the TI-2500 Datamath a quarter century ago.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, May 9, 2002. No reprints without written permission.