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Additional Pictures 

 

This Concept II was manufactured in February 1976 
by Texas Instruments in Lubbock, TX (week 08 year 1976).

The rare CONCEPT I side by side with the CONCEPT II.


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

Joerg Woerner, February 2, 2010. No reprints without written permission.