Apple Lisa

Lisa is a line of desktop computers that were designed, manufactured and sold by Apple Computer. It was the first mass-market personal computer operable through a graphical user interface (GUI). The Lisa was primarily marketed to individual and small and medium-sized businesses as a groundbreaking new alternative to much bigger and more expensive mainframes or minicomputers, such as those from IBM, which either required additional, expensive consultancy from the supplier, hiring specially trained personnel, or at least, a much steeper learning curve to maintain and operate.

Development of the Lisa began in 1978; Apple co-founder Steve Jobs received demonstrations of GUI technology being developed by Xerox's Palo Alto Research Center (PARC), some of which would inspire aspects of the computer's operating system. The Lisa was based on the Motorola 68000 microprocessor, and utilized an operating system with a window-and-mouse-driven interface, a document-oriented workflow, memory protection, and a pre-loaded office suite.