Microsoft ( Microsoft, NASDAQ:MSFT, HKEx: 4338) is the world's PC ( Personal Computer, a personal computer ) software development guide, by Bill Gate and Paul Alan was founded in 1975, headquartered in Redmond Washington State ( Redmond, adjacent to Seattle ). Is currently the world's largest computer software provider. Microsoft Corp, the existing employees 64000 people, in 2005 turnover of $36800000000. Its main products for the Windows operating system, Internet Explorer webpage browser and Microsoft Office office software suite. 1999 launched MSN Messenger network instant messaging client, the 2001 launch of the Xbox games, to participate in market competition game terminal.