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Additional Pictures 

 

 The printed circuit boards (PCBs) of the SR-51 Scientific Calculator with the PC-100 Printer Cradle connector and Diodes D1, D2 labeled.

 The Main-PCB of the SR-51A (Version 1) Scientific Calculator with the PC-100 Printer Cradle connector and Diodes D1, D2 labeled.

 The Main-PCB of the SR-56 Programmable Calculator with the PC-100 Printer Cradle connector, Diodes D1 - D9 and Resistors R1, R2 labeled.

 The Main-PCB of the SR-51A (Version 2) Scientific Calculator with the PC-100 Printer Cradle connector, Diodes D1 - D9 and Resistors R1, R2 labeled.


horizontal rule

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

© Joerg Woerner, February 24, 2024. No reprints without written permission.