Texas Instruments TI-31 SOLAR (Japan)

Date of introduction:  1986 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:  150916
Batteries:  n.a. Date of manufacture:  mth 05 year 1986
AC-Adapter:   Origin of manufacture:  Japan (T)
Precision:  11 Integrated circuits:  Toshiba T6974S
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner
Download leaflet:   (US: 1.2 MByte)
  (US: 1.1 MByte)
Download manuals:   (US: 3.2 MByte)
  (EU: 10.0 MByte)

TI-31SOLAR_T0586_PCB.jpg (114840 Byte)Only few month after introduction of the original TI-31, development engineers at Toshiba, Japan choose smaller solar cells and the calculator was renamed to TI-31 SOLAR. 

TI-31SLR_3_IC.jpg (47301 Byte)The electronics inside the TI-31 SOLAR uses still the Toshiba T6974S single-chip calculator circuit discovered in the TI-30 SLR introduced two years earlier.

Later the production of the TI-31 SOLAR was shifted to China.




The TI-31 SOLAR is featured in the Texas Instruments Incorporated bulletins CL-882 and CL-913 dated 1986.


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If you have additions to the above article please email:

Joerg Woerner, September 23, 2003. No reprints without written permission.