Brand: Sinclair Radionics Ltd.
Model: Cambridge Programmable
Made in: United Kingdom (Hayling Island, Hampshire)
Manufacturer: Downland Electrics Ltd.
First year of production: 1976
Dimensions: 51 × 112 × 18 mm (battery cover adds 6 mm)
Weight: 51 g
The back of the calculator had a ‘pregnant’ bulge of the battery compartment, enlarged to take a 9v battery rather than the AAA batteries that the Cambridge casing had originally been designed for.
The Cambridge Programmable came supplied by the following program libraries:
Vol. 1 – General/finance/statistics
Vol. 2 – Mathematics
Vol. 3 – Physics & engineering
Vol. 4 – Electronics
IC’s: National Semiconductor MM5799EHY/N and DS7784N
Also released as the Radio Shack EC-4001 for the Tandy Corporation in North America.
