DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-1788 II
|Date of introduction:||1982||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 3.6" x 2.3" x 0.3"
91 x 57 x 8 mm3
|Weight:||1.3 ounces, 38 grams||Serial No:||82862643|
|Batteries:||2*LR43||Date of manufacture:||year 1982|
|AC-Adapter:||Origin of manufacture:||Taiwan|
|Precision:||8||Integrated circuits:||NEC uPD1032G|
|Program steps:||Courtesy of:||Joerg Woerner|
TI-1788 II corrected the unusual keyboard layout of the TI-1788
introduced just a few month earlier. Unfortunately is even this revised
layout not very convenient, you hit easily the [CE/C] button and have to repeat your
The backside of the calculator reveals another unusual feature - a hidden [POWER] switch. The calculator was obviously manufactured in Taiwan but we are not able to trace back its roots.
Dismantling the featured TI-1788 II calculator manufactured in 1982 by a non-disclosed Original Equipment Manufacturer (OEM) reveals a very clean design centered around a NEC uPD1032G single-chip calculator circuit soldered on a double-sided printed circuit board (PCB) and powered by two small LR43 batteries.
Inspecting the PCB of this TI-1788 II calculator brought our attention to a small mark reading CC-31C-10, similar marks could be found with the TI-1788 and TI-1788 III, the latter manufactured probably by Cal-Comp Electronics. We started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
The next calculator in this product line added a not only World Time, Calendar and Stopwatch features to the TI-1788 II, but even conversion capabilities. Don't miss the TI-1788 III.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, April 5, 2008. No reprints without written permission.