Sinclair Cambridge Type 1

Sinclair Cambridge Type 1 Calculator
This model was released in Summer 1973. It is brown in colour. This was many people's introduction to electronic calculators. It was also available as a kit.

8 digits, red LED.
4-functions, constant.
Has [C] and [K] (constant) keys.
Batteries: 4x AAA.
Main integrated circuit - General Instruments Microelectronics GI-C550, here date coded mid-1973.
50 mm x 111 mm x 28 mm (2" x 4.4" x 1.1").
Made in England.
The first of the very small Sinclair Cambridge series, introduced in Summer 1973, costing in Britain £43.95 Sterling.
The case has a glossy finish, with a poorer quality moulding than usual for Sinclair. The main chip is in a more expensive ceramic package.

Further details can be seen at http://www.vintagecalculators.com/html/cambridge_models.html

Thanks to http://www.walrus.co.uk/petes/calcs/calcs.htm for the photograph taken from an early advert

Manufacturer: Sinclair
Date: July 1973

Other Systems Related To Sinclair Cambridge Type 1:

Item Manufacturer Date
Sinclair Enterprise Programmable Sinclair Unknown
Sinclair Executive Memory Sinclair 1973
Sinclair Cambridge Type 3 Sinclair 1975
Sinclair Scientific programmable Calculator Type 2 design Sinclair 1975
Sinclair Cambridge Memory Type 3 Sinclair 1975
Sinclair Oxford 200 Type 1 Sinclair 1975
Sinclair Oxford 200 Type 2 Sinclair 1975
Sinclair Oxford 200 Type 1 (Early style) Sinclair 1975
Sinclair Oxford Universal Sinclair 1975
Sinclair Cambridge Type 4 Sinclair 1975
Sinclair Cambridge Scientific Calculator Sinclair 1975
Sinclair Oxford Scientific White Calculator Sinclair 1976
Sinclair Sovereign Sinclair 1976
Sinclair Cambridge Programmable Sinclair 4th September 1976
Sinclair Cambridge Programmable Sinclair 4th September 1976
Sinclair Instrument Wrist Calculator Sinclair Radionics February 1977
Sinclair President Sinclair 1978

This exhibit has a reference ID of CH5044. Please quote this reference ID in any communication with the Centre for Computing History.

 

Sinclair Cambridge Type 1


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