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Casio 001 Desktop Calculator
The Casio 001 is Casio's first attempt at a
desktop fully-electronic calculator, introduced in June of 1965. Prior to the
001, Casio's calculators were based on relay technology, and while
their relay calculators offered sophisticated capabilities, it was clear that
pure electronics were the wave of the future. The Casio 001 offered
ten-digit capacity, with Nixie tube display, and a ten-key keyboard.
It was built upon discrete transistor circuitry, housed on muliple plug-in
circuit boards. The knobs across the
front of the machine could be set to provide a constant number which could be
recalled for repetitive use -- a primitive form of the constant function
provided in later calculators. This feature carried over from Casio's earlier
relay-based calculators. If you have one of these machines, operational or not,
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