| CASIO Memory-8A Japan- 1975 Four functions, Mem. functions Sqr Root, % |
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| "1975
was a big year for Casio and in July a personal eight digit calculator with memory and
square root, plus percentage key, the Memory 8A was introduced. This machine used a
MicroPD977C Chip and LD8120 Flouro Display." Ray Mackay, Old Casio Calculators |
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| Source: Ray Mackay | |