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Additional Pictures 

 

The Main printed circuit board (PCB) of an Centurion International Industries Multiputer (CPD-15) Computational Skill Trainer manufactured in November 1973 with its (mirrored) backside.


horizontal rule

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

Joerg Woerner, May 23, 2026. No reprints without written permission.