DATAMATH  CALCULATOR  MUSEUM

Additional Pictures 

 

The Main printed circuit board (PCB) of the modified SR-50A calculator
with a TMC0501 Arithmetic Chip from an early SR-50.

Close-up view of the TMC0501 Arithmetic Chip from an SR-50
and the TMC0521 SCOM Chip from an SR-50A.


horizontal rule

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

Joerg Woerner, August 31, 2023. No reprints without written permission.