Sinclair Cambridge Programmable Calculator

Home > Browse Our Collection > Calculators > Electronic Calculators > Sinclair Cambridge Programmable Calculator

The Sinclair Cambridge Programmable Calculator was also sold in the U.S as the Radio Shack EC-4001.
It had an 8 digits red LED display (made by National Semiconductor).

Scientific programmable. Integrated circuits - National Semiconductor MM5799EHY/N and DS7784N
9v (PP3 battery) - a "pregnant" mode because of the bulge on the back, see photograph
50 mm x 111 mm x 28 mm.
Made in England.

This was originally purchased on the 4th September 1976.

Manufacturer: Sinclair
Date: 1st September 1976

Other Systems Related To Sinclair Cambridge Programmable Calculator:

Item	Manufacturer	Date
Sinclair Cambridge Universal	Sinclair	Unknown
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
Sinclair Executive Memory	Sinclair	1973
Sinclair Cambridge (Type 1)	Sinclair Radionics	July 1973
Sinclair Cambridge Memory (Type 2)	Sinclair	1975
Sinclair Oxford 100 (Type 1)	Sinclair Radionics	1975
Sinclair Cambridge (Type 3)	Sinclair Radionics	1975
Sinclair Scientific Programmable Calculator	Sinclair Radionics	1975
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
Sinclair Cambridge (Type 4)	Sinclair Radionics	1975
Sinclair Sovereign (Gold)	Sinclair Radionics	1976
Sinclair Enterprise (Early Prototype Model)	Sinclair Radionics	1976
Sinclair Oxford Scientific Calculator	Sinclair	1976
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
Sinclair President	Sinclair	1978
Sinclair Sporting Life Settler	Sinclair	1978
Sinclair Enterprise Programmable	Sinclair Radionics	1978
Sinclair President (Boxed Version)	Sinclair	1978