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Additional Pictures 

 

The National Semiconductor NS107 in its wallet with holder for a credit card and bills.

 

This National Semiconductor NS107 calculator was manufactured around 1980 in Taiwan.

The National Semiconductor NS107 calculator is powered by two LR43 batteries.

The printed circuit board (PCB) of the National Semiconductor NS107 calculator hides the
part number of the single-chip calculator circuit.

Close-up view of the unknown NEC single-chip calculator circuit from the uPD1833G series.

Close-up view of the PCB-Mark of a NS107.


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

© Joerg Woerner, February 6, 2020. No reprints without written permission.