DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| The printed circuit
board (PCB) of the PC-100A. The main electronics
is centered around the TMC0251 single-chip microcomputer. Please notice the two additional TMC0561 and TMC0569 ROM in the small 8-pin packages to support the SR-52 resp. SR-56.
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| The printed circuit
board (PCB) of the PC-100C. The main electronics
is centered around the TMC0251 single-chip microcomputer. The two additional TMC0561 and TMC0569 ROM to support the SR-52 resp. SR-56 are obviously missing.
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If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, June 3, 2009. No reprints without written permission.
