DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Additional Pictures
| Close-up view
of the TMC1993 single-chip calculator circuit used with the Little
Professor (1980). PMOS Technology, 28-pin SPDIP 4-bit Microcontroller, 1,024*8 Bits Instruction ROM, 64*4 Bits Data RAM.  |
Die Photo (after acid)
of the
TMC1990/TMC1993
courtesy of
Sean Riddle. |
If you have additions to the above article please email: joerg@datamath.org.
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