Pure Energy - TV & Film Props - Prop House

The Sinclair Cambridge range of calculators were introduced in summer 1973. There were a dozen models and variations!

 

It has a red LED display, 4-functions, constant, [C] and [K] (constant) keys. It uses 4x AAA batteries. The main integrated circuit is a General Instruments Microelectronics GI-C550.

 

It was available to buy as a kit for £24.95 in January 1974. See the advert taken from Everyday Electronics magazine.

 

Sixe : 50 mm x 111 mm x 28 mm (2" x 4.4" x 1.1").

 

Made in England.