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Additional Pictures 

 

The DCM-50A Platform with the µPD943 single-chip calculator circuit from a Royal Model 90K (UA120) manufactured in November 1975.
Close-up view of the NEC µPD943 single-chip calculator circuit.

Close-up view of the view of the FUTABA 9-ST-10 Vacuum Fluorescent Display (VFD).


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

© Joerg Woerner, January 25, 2025. No reprints without written permission.