disk operating system

noun

, Computers.

1. DOS.

disk operating system

noun

1. an operating system used on a computer system with one or more disk drives Often shortened toDOS

Example Sentences

That product, called Microsoft Disk Operating System, or MS-DOS, was a watershed for the company.

From New York Times

Eventually the product refined by Microsoft - and renamed DOS, for Disk Operating System - became the core of IBM PCs and their clones, catapulting Microsoft into its dominant position in the PC industry.

From Washington Times

For those too young to remember, DOS was the Disk Operating System that ran most household PCs from 1981 until around the turn of the millennium. 

From Los Angeles Times

Disk operating system computers were popular in the 1980s and early 1990s.

From BBC

Described by Tilly Blyth, a computing curator at the Science Museum in London, as “a very significant machine,” the 5150 and its software, the Microsoft Disk Operating System or MS-DOS, established industry standards, which have dominated personal computer design ever since.

From New York Times