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Additional Pictures 

 

The Radio Shack EC-303 CHRONOMATH LCD calculator in Clock mode.

This Radio Shack EC-303 CHRONOMATH LCD calculator was manufactured
in August 1981 in Taiwan (Date code 8A1 mth 08 yr 1981).

The printed circuit board (PCB) of the Radio Shack EC-303 calculator is centered
around a NEC uPD1032G single-chip calculator circuit.

Close-up view of the NEC uPD1032G single-chip calculator circuit.

Close-up view of the PCB-Mark of an EC-303.


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

Joerg Woerner, April 19, 2020. No reprints without written permission.