The Apple-1 was introduced in July 1976. The machine was designed and hand-built by Steve Wozniak. His friend, Steve Jobs, suggested some improvement. Jobs also handled the sale and marketing for the computer. Itwas sold without a casing, power supply, keyboard or monitor. When offered at auction in Christie's sale of Travel, Science and Natural History on October 9, 2012 it is expected to sell between £50,000 and £80,000. Photos by Peter Macdiarmid/Getty Images.