The first version of the Windows operating system was Windows 1.0, which was published in 1985. This is Microsoft's first attempt to make a graphical user interface for the operating platform of a personal computer. It is based on the MS-DOS operating system developed by Microsoft for IBM personal computer in 1979.
With the release of 1985 Windows 1.0 as a symbol, the Win series operating system officially appeared. And gradually derived the following version, its version number, development code, version and release date are as follows: