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Additional Pictures 

 

The Bowmar Optostic 175 LED display (bottom) next to the DS115 (middle)
and CP-200032 display modules known from the SR-10.


horizontal rule

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

© Joerg Woerner, Noevmber 20, 2021. No reprints without written permission.