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(born Oct. 28, 1955, Seattle, Wash., U.S.) U.S. computer programmer and businessman. As a teenager, he helped computerize his high school's payroll system and founded a company that sold traffic-counting systems to local governments. At 19 he dropped out of Harvard University and cofounded Microsoft Corp. with Paul G. Allen (b. 1954). Microsoft began its domination of the fledgling microcomputer industry when Gates licensed the operating system MS-DOS to IBM in 1980 for use in IBM's first personal computer. As Microsoft's largest shareholder, Gates became a billionaire in 1986, and within a decade he was the world's richest private individual. Beginning in 1995, he refocused Microsoft on the development of software solutions for the Internet, and he also moved the company into the computer hardware and gaming markets with the Xbox video machine. In 1999 he and his wife created the largest charitable foundation in the U.S. In 2008 Gates relinquished day-to-day oversight of Microsoft in order to devote more time to charity work. He remained, however, the company's chairman.
U.S. computer firm, the leading developer of personal-computer software systems and applications. Microsoft, headquartered in Redmond, Wash., also publishes books and multimedia titles and manufactures hardware. It was founded in 1975 by Bill Gates and Paul G. Allen (b. 1954), who adapted BASIC for use on personal computers. They licensed versions of it to various companies, developed other programming languages, and in 1981 released MS-DOS for the IBM PC. The subsequent adoption of MS-DOS by most other personal-computer manufacturers generated vast revenues for Microsoft, which became a publicly owned corporation in 1986. It issued the first version of Microsoft Word, its popular word-processing program, in 1983, and Microsoft Windows, a graphical user interface for MS-DOS-based computers, in 1985. In 2001 Microsoft released Xbox, a video game console that quickly captured second place in the $10 billion video gaming market. In 2002 Microsoft launched Xbox Live, a broadband gaming network for their consoles.
© 2010 Encyclopædia Britannica, Inc.


