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Microsoft Windows 1.0 is introduced in November 20, 1985 and is initially sold for $100.00
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Microsoft Windows 2.0 was released December 9, 1987 and is initially sold for $100.00.
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Microsoft Windows 3.0 was released May, 22 1990. Microsoft Windows 3.0 full version was priced at $149.95 and the upgrade version was priced at $79.95.
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Microsoft Windows NT 3.1 was released July 27, 1993.
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Microsoft Windows 95 was released August 24, 1995 and sells more than 1 Million copies within 4 days.
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Microsoft Windows 95 Service Pack 1 (4.00.950A) is released February 14, 1996.
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Microsoft Windows 98 was released June 1, 1998.
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Microsoft Windows 2000 was released February 17, 2000.
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Microsoft Windows XP is released October 25, 2001.
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Microsoft releases Microsoft Windows Vista and Office 2007 to the general public January 30, 2007.
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Microsoft releases Windows 7 October 22, 2009.
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Microsoft releases Windows 8 October 26, 2012.
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