A Disk Operating System (DOS) is a computer operating system that utilizes a disk storage device such as a floppy disk, hard disk drive, or optical disc as a memory. DOS is used for performing functions such as file management, program loading, and running software applications.
An operating environment is a shell surrounding the Disk Operating System (DOS) of a personal computer. It functions like a graphical desktop, providing a menu interface from which users can select and run PC applications.
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