(MicroSoft-Disk Operating System) A single user operating system for PCs from Microsoft. It was functionally identical to IBM's PC-DOS version, except that starting with DOS 6, MS-DOS and PC-DOS each provided different sets of utility programs. Both MS-DOS and PC-DOS are called DOS. See DOS.
The company's patented wearable computer is a full-function Pentium PC that runs Microsoft MS-DOS, Windows, and Windows NT, along with UNIX, Linux and other operating systems that run on the Intel x86 architecture.