Additional Pictures 


The sales box of the Radio Shack EC-5100 sold around 1997 in the US.

This Radio Shack EC-5100 was manufactured by Texas Instruments in Italy.

The compact electronics of the Radio Shack EX-5100 on a flexible PCB.
The single-chip calculator circuit of the Radio Shack EC-5100.

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If you have additions to the above article please email:

Joerg Woerner, May 8, 2011. No reprints without written permission.