July 30, 1979
Apple begins work on the Lisa, which would become the world’s first commercial computer with a graphical user interface. Originally intended to sell for $2,000 and ship in 1981, the Lisa is delayed until 1983 and sells for $10,000. Utilizing technology that is ahead of its time, the high cost, relative lack of software, and some hardware reliability issues ultimately sink the success of the Lisa. However, much of the technology introduced by the Lisa influenced the development of the Macintosh as well as other future computer and operating system designs.