Apple Computer By NatalieWarden Apr 1, 1976 Steve Wozniak and Steve Jobs started the Apple Computer Company. Apr 1, 1976 The Apple I was the first with a single circuit board used in a computer. Jan 19, 1983 The Apple Lise was the first personal computer to use a GUI Sep 20, 1989 The portabel was the Apple's first attempt at a portable Macintosh. Feb 10, 1993 The Color Classic had a color screen, a larger ROM, and a restyled case Aug 31, 2004 The iMac G5's case was only two inches thick, yet housed a machine considerably faster and more advanced than its G4-based predecessor