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Additional Pictures 

 

Close-up view of the TMC0594 Magnetic I/O Chip used with the TI-59.
PMOS Technology, 22-pin DIP Four channel interface for magnetic card reader to save and load programs with up to 480 steps.


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

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