DATAMATH  CALCULATOR  MUSEUM

Additional Pictures 

 

The Main printed circuit board (PCB) of a Caltronic 812 calculator manufactured in December 1972 with its (mirrored) backside.

The Display Module of a Caltronic 812 calculator manufactured in December 1972 with its (mirrored) backside.

The Keyboard Assembly of a Caltronic 812 calculator manufactured in December 1972 with its (mirrored) backside.


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© Joerg Woerner, June 29, 2026. No reprints without written permission.