Sinclair Cambridge Scientific Handheld Electronic Calculator


This handheld electronic calculator has a white plastic case and nineteen rectangular plastic keys. These include ten digit keys, a decimal point key, four arithmetic function keys, a total key, a clear/clear entry key, and an exchange key. These keys also can be shifted to represent trigonometric and inverse trigonometric functions, memory, square roots, natural logarithms, exponents, inverses, and pi. To the right on the top row of keys is an on/off switch.

Text behind the keyboard reads: sinclair (/) Cambridge Scientific. Behind this is an eight-digit purple LED display.

The back of the calculator has a compartment for two AAA batteries. A mark on the lid to this compartment reads: Sinclair (/) MADE IN ENGLAND.


[Advertisement], Chicago Tribune, December 8, 1974, p. E30. Sinclair scientific calculator advertised as on sale for $89.95.

Date Made: 1974

Maker: Sinclair Radionics Ltd.

Location: Currently not on view

Place Made: United Kingdom: England

See more items in: Medicine and Science: Computers, Computers & Business Machines, Handheld Electronic Calculators


Exhibition Location:

Credit Line: Gift of John B. Priser

Data Source: National Museum of American History

Id Number: 1987.0435.18Catalog Number: 1987.0435.18Accession Number: 1987.0435

Object Name: electronic calculator

Physical Description: plastic (case; keys material)metal (circuitry material)Measurements: overall: 3/4 in x 2 in x 4 3/8 in; 1.905 cm x 5.08 cm x 11.1125 cm


Record Id: nmah_214342

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