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Additional Pictures 

 

This Concept 24 Version 2 was manufactured early in 1976 
by an unknown company in Japan.

The printed circuit board (PCB) of the CONCEPT 24 Version 2
hides the name of its manufacturer.


horizontal rule

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

Joerg Woerner, February 4, 2010. No reprints without written permission.