Stephen Gary "Woz" Wozniak (born August 11, 1950) is an American computer engineer and programmer who founded Apple Computer, Co. (now Apple Inc.) with co-founder, Steve Jobs, and Ronald Wayne. His inventions and machines are credited with contributing significantly to the personal computer revolution of the 1970s. Wozniak created the Apple I and Apple II computers in the mid-1970s.
Wozniak has several nicknames, including "The Woz", "Wonderful Wizard of Woz" and "iWoz" (a reference to the ubiquitous naming scheme for Apple products). "WoZ" (short for "Wheels of Zeus") is also the name of a company Wozniak founded. He is sometimes known as the "Other Steve" of Apple Computer, the better known Steve being co-founder Steve Jobs. He is of mostly Polish ancestry.
In 1970, Wozniak became friends with Steve Jobs, when Jobs worked for the summer at a company where Wozniak was working on a mainframe computer. According to Wozniak's autobiography, iWoz, Jobs had the idea to sell the computer as a fully assembled printed circuit board. Wozniak, at first skeptical, was later convinced by Jobs that even if they were not successful they could at least say to their grandkids they had had their own company. Together they sold some of their possessions (such as Wozniak's HP scientific calculator and Jobs's Volkswagen van), raised USD $1,300, and assembled the first prototypes in Jobs's bedroom and later (when there was no space left) in Jobs's garage. Wozniak's apartment in San Jose was filled with monitors, electronic devices, and some computer games Wozniak had developed, similar to SuperPong but with voice overs to the blips on the screen. Wozniak carried electronic devices with him often, and would entertain party goers with novel devices.