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Additional Pictures 

 

This Litton Royal RC 80 was manufactured in January 1973 in Japan.

The Litton Royal RC 80 is powered by six rechargeable NiCd batteries.
Note: Batteries were previously removed to avoid leaking.

The Litton Royal RC 80 calculator with the frontside of its housing removed.

The Main printed circuit board (PCB) of the Litton Royal RC 80 is centered
around a General Instrument C-500 single-chip calculator circuit.

The keyboard module of the Litton Royal RC 80 calculator.



Close-up view of the General Instrument C-500 single-chip calculator circuit.

Close-up view of one the two Mitsubishi M58212 chips.

Close-up view of one the FUTABA 8-CT-01A Vacuum Fluorescent Display (VFD).


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

© Joerg Woerner, November 18, 2025. No reprints without written permission.