DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| The printed circuit
boards (PCBs) of a SR-50A (Version 2) manufactured in
February 1976 (left), SR-51A
(Version 2) manufactured in April 1976 (middle) and SR-56 manufactured in January 1976 in a side by side comparison. 
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| The printed circuit
boards (PCBs) of a SR-50A (Version 2) manufactured in August 1976 (left), SR-51A
(Version 2) manufactured in November 1976 (middle) and SR-56 manufactured in December 1976 in a side by side comparison. 
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If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, January 6, 2024. No reprints without written permission.