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Additional Pictures 

 

This Radio Shack EC-2006A calculator was manufactured around 1987 by Cal-Comp Electronics in Taiwan.

The printed circuit board (PCB) of the Radio Shack EC-2008 calculator is
centered around an unknown Toshiba single-chip calculator circuit.

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

Close-up view of the PCB-Mark of a EC-2006A.


horizontal rule

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

Joerg Woerner, March 15, 2020. No reprints without written permission.