Vintage British Calculators

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Sinclair Cambridge Universal

Cambridge Universal.
Inside Cambridge Universal.

Sinclair Cambridge Universal.

Display is 8 digits, red LED (made by National Semiconductor).

4-function, %, memory, square, square root.

9v (PP3 battery).

Integrated circuit - Mostek MK50321A, here date coded to late 1977.

50 mm x 111 mm x 28 mm.

Made in England.

This is a "pregnant" model with a bulge in the back to accommodate the thickness of the PP3 battery.

There is also a version with some of the keys in slightly different order.

Vintage British Calculators

Text & photographs copyright, except where stated otherwise, © Nigel Tout 2000-2024.