Texas Instruments TI-31 SOLAR (1989)

Date of introduction:  1989 Display technology:  LCD
New price:   Display size:  8 (5 + 2)
Size:  5.5" x 2.8" x 0.45"
 140 x 72 x 11 mm3
Weight:  2.8 ounces, 78 grams Serial No:  
Batteries:  n.a. Date of manufacture:  mth 08 year 1990
AC-Adapter:   Origin of manufacture:  Italy
Precision:  11 Integrated circuits:  T6974S
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (US: 3.2 MByte)

The TI-31 SOLAR (1989) followed the path of the TI-31 SOLAR (1988).

A less sophisticated calculator was introduced with the TI-30 SOLAR.

In the year 1993 this successful calculator was discontinued. Texas Instruments introduced a complete new family in a smoother housing:

TI-30X  New display with 10 + 2 digits, 3 memories
TI-30X SOLAR With Anylite solar-cells
TI-35X  Adds 2-dim statistics and hex-calculations
TI-36X SOLAR  With Anylite solar-cells

A similar calculator electronics was used with the Canon F-58 Scientific Statistical Calculator.


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If you have additions to the above article please email:

Joerg Woerner, December 5, 2001. No reprints without written permission.