British Calculators

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Data Devices

A report in 1974 mentions that Data Devices launched calculators in about 1972 but failed to get them off the ground[1].

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  1. Milton, R., Beaumont, A.J. (1974), Electronic Calculator Markets and Suppliers, 2nd. ed., Finresearch Series, London: Ovum, 39.

Vintage Calculators

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