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Additional Pictures 

 

The sales box of the National Semiconductor NS103 Data Checker sold around 1979 in the US.

The National Semiconductor NS103 Data Checker in its sleeve with holder for a checkbook and pen.

This National Semiconductor NS103 Data Checker calculator was manufactured in 1979 in Taiwan.

The National Semiconductor NS103 Data Checker calculator is powered by two LR44 batteries.

The printed circuit board (PCB) of the National Semiconductor NS103 Data Checker calculator is centered
around a Mitsubishi M58490P single-chip calculator circuit.

Close-up view of the Mitsubishi M58490P single-chip calculator circuit.

Close-up view of the PCB-Mark of the NS103.


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

Joerg Woerner, December 1, 2019. No reprints without written permission.