DATAMATH  CALCULATOR  MUSEUM

Additional Pictures 

 

The SR-50A, SR-51A and SR-56 calculators (from left to right) used in the last 
production year more or less identical printed circuit boards (PCB's).
 The only differences are the missing program / data memory and different SCOM chips.


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

© Joerg Woerner, June 7, 2005. No reprints without written permission.