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PC DOS 2000 is a slipstream of 7.0 with Y2K and other fixes applied. To applications, PC DOS 2000 reports itself as "IBM PC DOS 7.00, revision 1", in contrast to the original PC DOS 7, which reported itself as "IBM PC DOS 7.00, revision 0". [nb 2] PC-DOS 2000 was the last version of IBM PC-DOS that was sold at retail.
A Microsoft Windows 1.0 brochure published in January 1986. Microsoft showed its desire to develop a graphical user interface (GUI) as early as 1981. [1] The development of Windows began after Bill Gates, co-founder of Microsoft and the lead developer of Windows, saw a demonstration at COMDEX 1982 of VisiCorp's Visi On, a GUI software suite for IBM PC compatible computers. [2]