Windows is an operating system designed by Microsoft. The operating system is what allows you to use a computer. Windows comes preloaded on most new personal computers (PCs), which helps to make it the most popular operating system in the world.
- The MS-DOS is not the first operating system. The first OS was XENIX OS. In truth, MS-DOS was a modified licensing version of 86-DOS, also known as Quirky and Dirty DOS, and developed by Seattle Computer Products in 1980. Furthermore, XENIX was a variant name for the UNIX operating system version.
