Case for Casio College FX-80 pocket scientific electronic calculator Computing & Data Processing c. 1982
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Bowmar 901B pocket electronic calculator with AC adapter and carry case Bowmar 901b Computing & Data Processing c. 1975
Low priced multi-function Pocket calculator retailed by high street chemist outlet Low priced multi-function Pocket calculator Computing & Data Processing c. 1978
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Electronic pocket calculator, by Accurate Electronics Industry Limited, model Conic 750 F, c.1974. Conic 750F electronic calculator Computing & Data Processing 1974
Two Casio batteries from the College FX-80 pocket scientific electronic calculator, by Casio Computer Company Limited, Japan, 1975-1985 Two Casio batteries from the College FX-80 pocket scientific electronic calculator Computing & Data Processing c. 1982