Texas Instruments TI-35X

Date of introduction:  1993 Display technology:  LCD
New price:  $24.99 Display size:  10 + 2
Size:  5.7" x 2.8" x 0.55"
 146 x 72 x 14 mm3
Weight:  3.0 ounces, 85 grams Serial No:  
Batteries:  2*LR44 Date of manufacture:  mth 01 year 1994
AC-Adapter:   Origin of manufacture:  Italy
Precision:  12 Integrated circuits:  Toshiba T6A58S
Memories:  3    
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (UK: 3.7M Bytes)

In the year 1993 Texas Instruments introduced a new design line that replaced both the TI-68 inspired look of the earlier TI-35X and the boxy design of the TI-30 Stat calculator.

The smooth shape together with rubber-like keys was used on 5 different calculators:

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
BA Real Estate Financial calculations

TI-35X_RCI0194_PCB.jpg (61462 Byte)Dismantling the TI-35X reveals a novel construction based on a rubber keyboard pressing on a flexible printed circuit board (PCB) with an attached rigid board holding a Toshiba T6A58S single-chip calculator circuit. 

Simply by comparing the designation of the integrated circuits of the calculators you'll get the early X-family:

T6A57    TI-36X SOLAR
T6A58    TI-35X
T6A59    TI-40X Galaxy
T6A60    TI-9X Galaxy
T6A61    TI-30X

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


In the year 1996 this calculator was discontinued. Others like the TI-36X SOLAR survived in a new design. View it here.

The TI-35X is featured in the Texas Instruments Incorporated sales catalog CL-1233 dated 1994.


horizontal rule

If you have additions to the above article please email:

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