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Casio 121K Desktop Calculator

Image Courtesy Nigel Tout

Casio desktop Nixie-Tube display Calculator. 12-Digit, four-function with constant and accumulating total register. Circa late 1970, uses early Fairchild 4-chip LSI calculator chipset. AC-Powered.

See the WANTED page for the stablemate to this calculator, the Casio 161K.

Click HERE to see Nigel Tout's great exhibit on the Casio 121K.