Xbox Series Wireless Controller

OverviewIn 1975 Bill Gates and Paul G. Allen, two boyhood friends from Seattle, converted BASIC, a popular mainframe computer programming language, for use on an early personal computer (PC), the Altair. Shortly afterward, Gates and Allen founded Microsoft, deriving the name from the words microcomputer and software. During the next few years, they refined BASIC and developed other programming languages. In 1980 International Business Machines Corporation (IBM) asked Microsoft to produce the essential software, or operating system, for its first personal computer, the IBM PC. Microsoft purchased an operating system from another company, modified it, and renamed it MS-DOS (Microsoft Disk Operating System). MS-DOS was released with the IBM PC in 1981. Thereafter, most manufacturers of personal computers licensed MS-DOS as their operating system, generating vast revenues for Microsoft; by the early 1990s it had sold more than 100 million copies of the program and defeated rival operating systems such as CP/M, which it displaced in the early 1980s, and later IBM OS/2. Microsoft deepened its position in operating systems with Windows, a graphical user interface whose third version, released in 1990, gained a wide following. By 1993, Windows 3.0 and its subsequent versions were selling at a rate of one million copies per month, and nearly 90 percent of the world’s PCs ran on a Microsoft operating system. In 1995 the company released Windows 95, which for the first time fully integrated MS-DOS with Windows and effectively matched in ease of use Apple Computer’s Mac OS. Microsoft also became the leader in productivity software such as word-processing and spreadsheet programs, outdistancing longtime rivals Lotus and WordPerfect in the process.