Glossary Entry: DOS

Quick Definition

DOS, short for Disk Operating System, was one of the earliest operating systems* available for home computers. Microsoft's version, known as MS-DOS, was the most popular variant.

This operating system* was little more than a command line*. However, a few years later Microsoft would develop programs that would let the user manage their computer from a graphical interface*, and eventually Windows* would go from being an optional program to the operating system* itself.

Today, programs that were written for DOS are usually run in an emulator*, as modern operating systems*, including Windows*, no longer support them.

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