Bill Fernandez is a user interface architect and inventor who was Apple Computer's first employee when they incorporated in 1977 and is Apple employee # 4. He worked on both the Apple I and Apple II personal computers, and in the 1980s was a member of the Apple Macintosh development team. He contributed to several user interface aspects of the Mac OS, QuickTime and HyperCard and owns a user interface patent granted in 1994.