14 tech luminaries we lost in 2021

In 1961, a young Clive Sinclair was developing and selling pocket calculators, digital wristwatches, and mail-order radio kits through his own company, Sinclair Radionics. In 1975, he founded the company that would become Sinclair Research and began development of the electronics he would best be known for. The Sinclair ZX80 personal computer debuted in 1980. True to his radio-building background, Sinclair marketed the computer in both kit form for £80 ($108) or preassembled for £100 ($135). It was one of the first computers available at that price point, especially compared to the likes of the Apple II Plus, released a year earlier for $1,195.