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Additional Pictures 

 

The internal view of the TI-31 SOLAR manufactured in June 1986
by Toshiba in Japan hides the calculator chip.

The Toshiba T6974S single-chip calculator circuit.


horizontal rule

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

Joerg Woerner, October 10, 2008. No reprints without written permission.