Enlarge / Sir Clive Sinclair holding the world's smallest television screen when it was created by Sinclair Radionics in 1977. (credit: Getty Images) Sir Clive Sinclair, the namesake of a British electronics manufacturer who helped pioneer Europe's microcomputing boom, is dead at the age of 81. His company, Sinclair Radionics, is arguably best known around the world for 1982's ZX Spectrum, an early example of a computer capable of multi-color, real-time graphics.