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Additional Pictures 

 

The sales box of the Radio Shack 65-504 Checkbook Calculator sold around 2000 in the US.



The Radio Shack 65-504 Checkbook Calculator in its sleeve with holder for a checkbook and pen.

This Radio Shack 65-504 Checkbook Calculator was manufactured in October 2000 in China (Date code 10A00 mth 10 yr 2000).

The Radio Shack 65-504 Checkbook Calculator is powered by two LR43 batteries.

The printed circuit board (PCB) of the Radio Shack 65-504 Checkbook Calculator is centered
around an unknown single-chip calculator circuit hiding under a small epoxy blob.

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

Close-up view of the PCB-Mark of a 65-504.


horizontal rule

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

Joerg Woerner, February 26, 2020. No reprints without written permission.