When Microsoft released the very first version of Windows nearly 25 years ago, on Nov. 20, 1985, it was late to the game and little used. Apple had already brought graphical user interfaces to computers with Macintosh more than a year earlier, while DOS systems dominated the market for IBM and IBM-compatible PCs. No one who used this first version was likely to have predicted that Windows would completely dominate the PC market 25 years later...

http://tech.slashdot.org/story/10/11...10-At-25-Years