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Additional Pictures 

 

The DCM-50A Platform with the TMS0975NL/ZA0356 AP single-chip calculator circuit from a Little Professor (1976 Version A) manufactured in September 1976.
Close-up view of the TMS0975NL single-chip calculator circuit.

Close-up view of the DIS713 Light-Emitting-Diode (LED) display module using the DIS233G PCB.


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

© Joerg Woerner, November 11, 2023. No reprints without written permission.