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

 



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This exhibit has a reference ID of CH2695. Please quote this reference ID in any communication with the Centre for Computing History.
 

Sinclair Cambridge Programmable Calculator

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