Texas Instruments TI-30X SOLAR

Date of introduction:  1993 Display technology:  LCD
New price:   Display size:  10 + 2
Size:  5.7" x 2.8" x 0.55"
 146 x 72 x 14 mm3
Weight:  3.0 ounces, 84 grams Serial No:  
Batteries:  n.a. Date of manufacture:  mth 11 year 1994
AC-Adapter:   Origin of manufacture:  Italy
Precision:  12 Integrated circuits:  Toshiba T6M38
Memories:  3    
Program steps:   Courtesy of:  Joerg Woerner

Starting from the very first TI-30 with a red LED-display in the year 1976 all TI-30 variants used an 8-digit display. This is for most calculations convenient but in scientific notation you'll get only 5 digits of mantissa. 

The TI-30X introduced a major improvement, the display capacity was eXpanded to a full 10 digit mantissa with two independent digits for the exponent. The complete X-family covered 4 models:

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

TI-30X_Solar_RCI1194_PCB.jpg (63748 Byte)Dismantling the TI-30X SOLAR 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 T6M38 single-chip calculator circuit.

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

Later the TI-30Xa added a constant key and all model got a more stylish housing.

The same housing was used with the BA Real Estate.

The TI-30X SOLAR is featured in the Texas Instruments Incorporated sales catalog CL-1233 dated 1994.


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If you have additions to the above article please email:

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