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Additional Pictures 

 

This early TI-52 Prototype was manufactured in April 1985 by Toshiba in Japan.

The battery holder of this early TI-52 Prototype is identical with the TI-30 Galaxy.

The first design of the TI-52 makes use of two printed circuit boards (PCB's). The smaller PCB accommodates the
single-chip calculator circuit, the display and the battery contacts. The larger one just the keyboard.

Close-up view  of the Toshiba T7767S single-chip calculator circuit.


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

Joerg Woerner, June 27, 2018. No reprints without written permission.