Sinclair C5 to guide development. Gus Desbarats, the C5's industrial designer, attributes the vehicle's flawed concept to Sinclair operating in a "bubble" and believes that Sinclair "failed to understand the difference between a new market, computing, and a mature one, transport, where there were more benchmarks to compare against". He comments that the experience of working on the C5 convinced him of the need for industrial designers such as himself to get "involved early in the innovation process, shaping basic configurations, never again [being] satisfied to simply decorate a fundamentally bad idea". Sinclair himself said in 2005 that the C5 "was early
Sinclair Sovereign and information could only be taken from the memory onto the screen. Five keys were used for memory operations. The Sovereign used a Mostek MK50321N main integrated circuit, the same as the Sinclair Wrist Calculator and some variants of the Sinclair Cambridge. Clive Sinclair had assumed that people would prefer attractive illuminated LED displays to LCD displays, which incidentally also required more expensive CMOS chips. However, his calculators were designed with the assumption they would be turned off between calculations, which did not prove to be the case. Advertisements suggested that the batteries would last "about a year" under normal