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Additional Pictures 

 

The DCM-50A Platform with the General Instrument 250 single-chip calculator circuit from a Litton Royal Digital III manufactured in March 1972.
Close-up view of the General Instrument 250 single-chip calculator circuit.

Close-up view of the unknown Vacuum Fluorescent Display (VFD).

 


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© Joerg Woerner, July 8, 2025. No reprints without written permission.