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Additional Pictures 

 

This Melcor Model 1000 was manufactured in October 1973 in the United States.

The Melcor Model 1000 is powered calculator is powered by a 9V battery.

The main assembly of the Melcor Model 1000 calculator with keyboard and display module visible.

The printed circuit board (PCB) of the Melcor Model 1000 calculator is centered
around an AMI S2144 single-chip calculator circuit with two additional digit driver chips.

The Close-up view of the AMI S2144 single-chip calculator circuit.

The Close-up view of the ITT 492 digit driver chip.

The Close-up view of the SL23557 digit driver chip.

The Close-up view of the unknown Nine-Digit LED display module.


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

Joerg Woerner, February 5, 2023. No reprints without written permission.