Planet Sinclair

x The Machines
x Machines: 1970s
x Active Filter Unit
x The Black Watch
x Cambridge / Cambridge Scientific
x DM1 / DM2 / DM235 / DM350 / DM450 / PDM35 / PFM
x Enterprise /
Enterprise Programmable
x Executive /
Executive Memory
x MK14
x TV1A / TV1B / MON1A
x Oxford 100 / 200 / 300
x PP3
x President
x Project 605 / 80 / PZ8 / Q16 / Q30 / Stereo FM / Z-50
x Scientific / Scientific Programmable / Scientific Programmable Mk 2
O Sovereign
x Super IC-12
x Wrist Calculator

Last updated
8 Jan 1998


Born out of the patriotic fervour of The Queen's Silver Jubilee in 1977, the Sovereign was an attempt to break out of the bottom end of the calculator market and recapture the top end. It was one of the better-engineed Sinclair calculators and was very well-designed - so much so, in fact, that Sinclair designer John Pemberton won a Design Council Award for it. It was available in a satin chrome finish (pictured above) or gold-plated. Sinclair even produced two in solid gold!

It was, however, only something of a "technical" success, as Sinclair was by that time on the verge of being squeezed out of an increasingly competitive market; profit margins became so slim that Sinclair was soon selling them at a loss.