Apple has been a major player in the evolution of personal computing since its founding in 1976. The Apple II microcomputer, introduced in 1977, was a hit with home users. In 1983, Apple introduced the Lisa, the first commercial personal computer to employ a graphical user interface (GUI), which was influenced in part by the Xerox Alto. In 1984, the Macintosh was introduced, furthering the concept of a user-friendly graphical user interface, and also introducing the mouse for the first time to a personal computer. Apple's success with the Macintosh became a major influence in the development of graphical interfaces elsewhere, with major computer operating systems such as Microsoft Windows, Commodore Amiga, and Atari ST, all appearing on the market within two years of the introduction of the Macintosh.