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Sinclair Cambridge Memory Type 3

Display is 8 digits red LED (made by Bowmar).
4-function, %, memory.
Has [M], [C/CE], and [%] keys.
Battery: 9v (PP3 battery). The PP3 battery is thicker than the AAA batteries normally used with Cambridge models. Two-piece smooth red plastic case which is designed so small that the 9V battery compartment protrudes out an extra 5mm! A raised escutcheon frames a deep purple display filter that gives quite a good, if narrow view of the digits. The keyboard surround is in contrasting black plastic. The white keys are short travel and give a prominent click but work well enough. The company and calculator name are printed in black text above the keyboard. Palm-sized calculator that can only be used in the hand and not on the desk due to the protruding back section.
Main integrated circuit: Mostek MK-50321
Size 50 mm x 111 mm x 28 mm.
Made in England.

This calculator was very kindly donated by Francis Hookham

Manufacturer: Sinclair
Date: 1975

Other Systems Related To Sinclair Cambridge Memory Type 3:

Item Manufacturer Date
Sinclair Enterprise Programmable Sinclair Unknown
Sinclair Executive Memory Sinclair 1973
Sinclair Cambridge Type 1 Sinclair July 1973
Sinclair Cambridge Type 3 Sinclair 1975
Sinclair Scientific programmable Calculator Type 2 design 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 Sovereign Gold Sinclair 1976
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 CH30323. Please quote this reference ID in any communication with the Centre for Computing History.


Sinclair Cambridge Memory Type 3

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