what is Dos

DOS (Disk Operating System) is an operating system that was developed by Microsoft in the 1980s. It was the most commonly used operating system on IBM PC compatible computers during the 1980s and early 1990s. DOS was the first operating system to be widely used on personal computers, and it was the dominant operating system for IBM PC compatible computers during the 1980s. It provided a command-line interface for users to interact with the computer.