The Macintosh, introduced in January 1984, was the first successful mass-market computer to include a mouse and to run a graphical user interface similar to that of the Xerox Alto. The computer came in a vertical all-in-one unit that included a small bitmapped monitor and a 3.5-inch floppy disk drive. The Macintosh was sold as “the computer for the rest of us,” and its intuitive interface and mouse were set up to compete with the dominant IBM PC platform and text-based operating systems such...