DATAMATH CALCULATOR MUSEUM
compartment of the SR-51 gives access to the electrical
contacts used to connect the PC-100 printer cradle.
|The Main printed circuit
board (PCB) of a SR-51
calculator. The brain of the
calculator uses the TMC0501 and a stack of 2 SCOM (TMC0522,523) circuits.
A second PCB holds the keys, display and driver circuits.
|The Display and Keyboard
PCB of the SR-51 with two Texas Instruments
SN27882 display drivers and fourteen 7-segment LED-Displays.
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© Joerg Woerner, November 24, 2008. No reprints without written permission.