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Additional Pictures 

 

The sales box of the Zayre CONCEPT VI calculator sold around 1977 in the US.

This Concept VI was manufactured in 1977 
by an unknown company in Hong Kong.

The printed circuit board (PCB) of the CONCEPT VI
hides the name of its manufacturer.


horizontal rule

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

Joerg Woerner, February 5, 2010. No reprints without written permission.