DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
This Caltronic 912 was manufactured
in February 1973 in Hong Kong. |
The Caltronic 912 is
powered by a disposable 9V battery. |
The
Caltronic 912 calculator with the rearside of its housing removed. |
The
Caltronic 912 calculator with its housing completely
removed. |
| The Main printed circuit
board (PCB) of the Caltronic 912 is centered around a Mostek MK5012P single-chip calculator circuit.  |
Close-up view of the Mostek MK5012P
single-chip calculator circuit. |
Close-up view of the 3
Litronix DL-33 Seven-Segment LED Displays. |
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, July 4, 2026. No reprints without written permission.