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Additional Pictures 

 

The DCM-50A Platform with the FR1001 single-chip calculator circuit from a Unitrex 1200K (Type 47) manufactured in November 1973.
Close-up view of the Frontier FR1001 single-chip calculator circuit.

Close-up view of the view of the unknown Planar Neon Gas Discharge Display (Panaplex-style).


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

© Joerg Woerner, May 24, 2026. No reprints without written permission.