Microsoft Windows started as version 1.0 as an add-on to its disk operating system (DOS). The product was a simple graphical user interface (GUI) program that was little more than a visual file manager. Windows 2.0 was released to take advantage of the features offered by Intel’s 286 processor. Windows 3 is the version that really started Microsoft on its current path of success.
All of these versions numbers are very logical and can be easily counted. Where things start to get a little ambiguous is when Windows NT is thrown into the mix..."
Seen on Blue's News."
Link to Original Source