In January 1983, Apple Computer officially unveils the Lisa computer. It features a 5-MHz 68000 microprocessor, 1MB RAM, 2MB ROM, a 12-inch B/W monitor, 720x364 graphics, dual 5.25-inch 860KB floppy drives, and a 5MB Profile hard drive. It is slow, but innovative. Its initial price is US$10,000. The Lisa is based on the Xerox Star System, and cost Apple Computer US$50 million to develop. It is the first personal computer with a graphical user interface. The software for it cost Apple Computer US$100 million to develop. "Lisa" stands for Local Integrated Software Architecture.