Texas Instruments TI-35X 

Date of introduction:  1991 Display technology:  LCD
New price:   Display size:  10 + 2
Size:  5.3" x 2.8" x 0.4"
 134 x 71 x 11 mm3
Weight:  2.4 ounces, 67 grams Serial No:  
Batteries:  2*LR44 Date of manufacture:  mth 06 year 1992
AC-Adapter:   Origin of manufacture:  Italy
Precision:  12 Integrated circuits:  Toshiba T6A58S
Memories:  3    
Program steps:   Courtesy of:  Joerg Woerner

The TI-35X is an enhanced version of the original TI-35 PLUS with a styling similar to the TI-68 calculator. The TI-36X SOLAR introduced in the same year added solar cells.

Dismantling this TI-35X manufactured in June 1992 reveals a Toshiba T6A58S single-chip calculator circuit mounted on a flexible printed circuit board (Flex-PCB).

A design variation of this calculator changed the colors of the +, -, *, /-keys from blue to grey. Get a picture here.

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

Read more about the Logarithm Bug and its side effect on the related yx function present in this 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.