When IBM was getting ready to release their first personal computer, the IBM PC, Microsoft was famous for Altair BASIC, International Business Machines Corporation (IBM) approached Microsoft to produce an operating system for their new product. This happened in 1980.
For IBM’s requirement, Microsoft purchased an existing operating system from another company. They modified and renamed it as MS-DOS (Microsoft Disk Operating System). The new operating system was released in 1981 and met with enormous success. Thereafter, most manufacturers of personal computers licensed MS-DOS as their operating system. Microsoft generated large revenue and never stopped growing thereafter.
The jewel in their crown, The Microsoft Windows operating system was released in 1983. This new product made Gates a billionaire at the age of 31. With the introduction of Surface tablets that ran Windows RT and Windows 8 Pro in 2012, they started the manufacture of computing hardware.
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