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Apple Lisa

The Apple Lisa was released in 1983. Its interface was greatly influenced by the Xerox Alto. Steve Jobs and the Lisa team were given two demonstrations of the Alto, after which they implemented the Lisa's interface. The similarities are so significant that Xerox sued Apple in 1989 for unlawfully using Xerox copyrights in its Macintosh and Lisa computers. Xerox's lawsuit followed Apple's lawsuit against Microsoft, where Apple tried to prevent Microsoft and Hewlett-Packard from using a similar graphical user interface in their operating system. The Xerox case was dismissed as was Apple's case against Microsoft.

The Lisa's icons were similar but a bit clumsy in comparison to those of Xerox. Lisa's GUI features included drop-down menus and folder based directories.

Apple Lisa screenshot
File source: http://www.digibarn.com/collections/software/lisa/photo4a.big.jpg
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