DATAMATH CALCULATOR MUSEUM
Texas Instruments LOGpit
|Date of introduction:||1981||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 5.3" x 2.9" x
134 x 74 x 24 mm3
|Weight:||3.6 ounces, 101 grams||Serial No:|
|Batteries:||2*AA||Date of manufacture:||wk 45 year 1981|
|AC-Adapter:||Origin of manufacture:||Italy|
|Precision:||Integrated circuits:||TP0455/CD4514 or TP0456/CD4564|
|Program steps:||Courtesy of:||Gerhard Wenzel|
|Download manual:||(DE: 3.2M Bytes)|
LOGpit sold in Germany was thought as a calculator for cars. With an
integrated timer/clock you could measure your travelling speed, calculate your
remaining time to the destination and some other car related calculations.
The housing of the LOGpit was similar to the TI-30 LCD with it's huge battery compartment but added a small buzzer for the timer-alarm. Dismantling the LOGpit reveals a small surprise, the electronics of the TI-30 LCD received a small crystal (X-TAL) as a reliable time base for the integrated timer/clock.
If you are interested in the technology behind the calculator chips developed by Texas Instruments: The CD4564 is one TP0456 designs replacing a faulty TP0455 application. In the meantime we discovered a LOGpit with the original CD4514B chip, please notice the preliminary printing of the chip housing.
Later LOGpit models got a slightly changed coloration.
The model was available in both Englisch, French and Italian lettering named TI-2001 GTI.
Compare this car-computer with an airplane-computer sold by Cessna and the TI-2000 Time Manager.
If you have additions to the above article please email: email@example.com.
© Joerg Woerner, December 5, 2001. No reprints without written permission.