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Additional Pictures 

 

The Main printed circuit board (PCB) of an Cybernetic Systems Mathiputer (CPD-35) Learning System manufactured in October 1975 with its (mirrored) backside.


horizontal rule

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

© Joerg Woerner, May 9, 2026. No reprints without written permission.