DATAMATH CALCULATOR MUSEUM

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

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 y^x 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.

If you have additions to the above article please email: joerg@datamath.org.