Sinclair Cambridge Universal

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The Sinclair Cambridge Universal calculator is part of Sinclair's Cambridge range of calculators from the 1970s. This model dates from 1977. It is a four-function calculator with additional %, memory, square, square root functions. The battery cover protrudes so that it can fit the PP3 battery it required, which resulted in such models being known as "pregnant" models.

This example was donated by a former employee of Sinclair Radionics and does not match other examples of the Cambridge Universal found online. The keys are not in the same order and it has a General Instrument C689D 7732 instead of the Mostek MK50321. The C689 was also used by Sinclair in the Enterprise calculator.

Manufacturer: Sinclair
Date: Unknown

Other Systems Related To Sinclair Cambridge Universal:

Item	Manufacturer	Date
Sinclair Executive Type 2	Sinclair Radionics	1972
Sinclair Executive Type 1 Circuit Board	Sinclair Radionics	1972
Sinclair Executive Type 1	Sinclair Radionics	1972
Sinclair Cambridge Type 2 (Prototype Model)	Sinclair	1973
Sinclair Executive Memory (Possible Development Model)	Sinclair Radionics	1973
Sinclair Executive Memory (Development Model)	Sinclair Radionics	1973
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Sinclair Cambridge Memory (Type 3)	Sinclair	1975
Sinclair Oxford 200 (Type 1)	Sinclair Radionics	1975
Sinclair Oxford 200 (Type 2)	Sinclair Radionics	1975
Sinclair Oxford 200 (Type 1 - Early Style)	Sinclair Radionics	1975
Sinclair Oxford Universal	Sinclair Radionics	1975
Sinclair Oxford 300 (Type 2)	Sinclair Radionics	1975
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Sinclair Sovereign (Black)	Sinclair Radionics	1976
Sinclair Cambridge Scientific Calculator	Sinclair Radionics	1976
Sinclair Enterprise (Possible Prototype Model)	Sinclair Radionics	1977
Sinclair Sovereign (Silver Jubilee)	Sinclair Radionics	1977
Sinclair Cambridge Programmable	Sinclair	1977
Sinclair Cambridge Programmable	Sinclair	1977
Sinclair Instrument Wrist Calculator	Sinclair Instrument	February 1977
Sinclair President Scientific	Sinclair	1978
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Sinclair Enterprise Programmable	Sinclair Radionics	1978
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