Steve Wozniak was born before the invention of a microcomputer.
Stephen ( or Stephan ) Gary Wozniak ( [ ˈwɒzniæk ] , born August 11 , 1950 ) , nicknamed `` Woz '' , is an American inventor , electronics engineer , programmer , philanthropist , and technology entrepreneur who co-founded Apple Inc. . He primarily designed the 1977 Apple II , known as one of the first highly successful mass-produced microcomputers , while Jobs oversaw the development of its unusual case and Rod Holt developed the unique power supply .