DATAMATH  CALCULATOR  MUSEUM

Additional Pictures 

 

The DCM-50A Platform with the µPD273 single-chip calculator circuit from a Brother PROCAL 408AY (Version 2) manufactured in January 1974.
Close-up view of the NEC µPD273 single-chip calculator circuit.

Close-up view of the view of the ISE Electronics (ITRON) DP90A Vacuum Fluorescent Display (VFD).


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

© Joerg Woerner, April 13, 2025. No reprints without written permission.