Reference to Microsoft, was thinking of the first character is Bill Gates. In 1975, at the age of 20, he and friend Paul Allen (Paul Allen) founded the United States Microsoft Corporation (Microsoft Corp). Bill Gates and Paul Allen were teens began writing programs when two computer players is because of writing the first micro-computer--the MITS Altair8800 BASIC language compiler, contributed to establishment of Microsoft, then Microsoft started a MITS has developed programming languages such as FORTRAN, and COBOL compiler. In 1980, IBM plans to launch the first PCs, is full of other manufacturers ' products, for example Intel's microprocessors, Epson printers, operating systems written specifically for the Intel microprocessor developed by CP/M, but because the writers of CP/M Don Cheadle and IBM did not discuss business, IBM turned to principal-Bill Gates. Bill Gates has spent $ 75,000 to Seattle computing company (Seatle Computing) buy back right and patent of the CP/M alternative to QDOS, then six months of madness after processing, and finally completed the first version of MS-DOS, introduced in 1981 with the first generation of IBM personal computers. Microsoft can succeed for many reasons, in addition to business and marketing processes attributed to founder Bill Gates in addition to promoting its software to tie in with the IBM personal computer was the key. Through the success of MS-DOS, Microsoft rolled out a lot of popular software, such as a word processing system (Word), spreadsheet (Excel), the Windows operating system (Windows), as well as VISUAL BASIC, VISUAL C++. In addition, gates with special emphasis on compatibility between products, allow users to receive when you upgrade the product without difficulty, even the different series of products can be combined with each other. Software development policies focus on long-term objectives, and this is the reason why Microsoft continues to retain market.