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Additional Pictures 

 

The sales box of the TI-31 SOLAR sold around 1987 in Germany.

This TI-31 SOLAR was manufactured in October 1987 by 
Toshiba in China (Date code T-1087 mth 10 yr 1995).

The printed circuit board (PCB) of the TI-31 SOLAR is centered
around the Toshiba T6974S single-chip calculator circuit.

The T6974S single-chip calculator circuit manufactured in CMOS-technology.


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

Joerg Woerner, June 11, 2017. No reprints without written permission.