dos full form in computer

DOS stands for Disk Operating System. In computing, DOS was a type of operating system that was widely used in the early days of personal computers. It was a command-line based system that provided basic file and disk management capabilities, and allowed users to run software and applications from the command prompt. The most popular version of DOS was MS-DOS, which was developed by Microsoft and used as the default operating system for IBM-compatible PCs in the 1980s and 1990s. Today, DOS is no longer widely used as a standalone operating system, but some of its commands and concepts have been incorporated into modern operating systems, such as Windows.