Microsoft is one of the largest companies in the information technology industry all over the world. One of the most known Microsoft products are MS-DOS operating systems, Microsoft Windows and Microsoft Office office software. The headquarter of Microsoft is located in Redmond, Washington. The company was founded in 1975 by Bill Gates and Paul Allen. In 2012, the company reached 10,000 patents. The company produced such devices as Xbox consoles or Microsoft Lumia smartphones.