Texas Instruments TI-1788

Date of introduction:  1981 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:  9166539
Batteries:   Date of manufacture:  year 1981
AC-Adapter:   Origin of manufacture:  Taiwan
Precision:  8 Integrated circuits:  NEC uPD1032G
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

TI-1788_Wallet.jpg (190257 Byte)The TI-1788 combines the clock and stopwatch function known from the TI-1790 with a simple 4-function calculator in a very small housing. The unusual layout of the keyboard was corrected with the TI-1788 II introduced only six month later.

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.

TI-1788_IC.jpg (199232 Byte)The internal construction of the TI-1788 II is typical for a far-east manufactured calculator of the 1980's and looks familiar to us. The single-chip calculator circuit was manufactured by NEC, Japan.

horizontal rule

If you have additions to the above article please email:

Joerg Woerner, March 5, 2009. No reprints without written permission.