Operating system program popular among users of the IBM-PC and compatible computers.
Microsoft's Disk Operating System, the operating system used by most personal computers. WWWebfx Home Page
MicroSoft Disk Operating System. The operating system before Windows. See DOS. ALPHABET
This is one of the official names of DOS ... MS-DOS or Microsoft DOS .... a version of DOS put out by the Microsoft Corporation.
Crude single-tasking IBM compatible PC operating system.