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Additional Pictures 

 

Close-up view of the TMC0538 SCOM (Scanning and Read-Only Memory) Chip used with the SR-56.
PMOS Technology, 28-pin DIP 1,024*13 Bits Instruction ROM with serial interface to Arithmetic Chip,
16 Constants and 2 Registers with 16 digits, each, clock oscillator and 16-digit display scanning.

Die Photo of the TMC0530B/0537A courtesy of Sean Riddle.

Die Photo of the TMC0530B/0538 courtesy of Sean Riddle.

Close-up view of the TMC0534 SCOM (Scanning and Read-Only Memory) Chip used with the SR-52A.
PMOS Technology, 30-pin DIP 1,024*13 Bits Instruction ROM with serial interface to Arithmetic Chip,
16 Constants and 2 Registers with 16 digits, each, clock oscillator and 16-digit display scanning.


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

Joerg Woerner, May 2, 2021. No reprints without written permission.