DOS

DOS, or Disk Operating System, is software that manages a computer's basic functions, such as storing, retrieving, and organizing files on storage devices like hard drives. It provides a platform for users to interact with the computer, typically through a command-line interface, by inputting text commands. DOS was common in early personal computers before graphical systems became popular. It handles tasks like launching programs, managing directories, and controlling hardware components, serving as the foundation for more advanced operating systems.