MS-DOS is a computer operating system by Microsoft Corporation. It stands for "Microsoft Disk Operating System", and came from an operating system Microsoft bought called 86-DOS, originally called QDOS, or "Quick and Dirty Operating System." The operating system used a command-line interface for the user to input commands. It was popularly used in PCs before a GUI operating system called Microsoft Windows came out, and still is used in some places today.
An example of the MS-DOS command-line interface, showing that the current directory is the root of drive C
|Written in||x86 assembly, later versions also used C|
|Working state||Preserved pieces exist in 32-bit Windows|
|Source model||Closed source; open source for select versions since 2018|
|Initial release||August 12, 1981|
|Final release||8.0 / September 16, 2000|
|Default user interface||Command-line, text|
MIT License (v1.25 & v2.0)
|Succeeded by||Windows NT (as of Windows XP)|
|Official website||MS-DOS overview|
|MS-DOS 6.0 unsupported as of December 31, 2001|
MS-DOS is a text-based operating system, meaning that a user works with a keyboard to input data and receives output in plain text. Later, MS-DOS often had programs using a mouse and graphics to make work more simple and quick. (Some people still believe that working without graphics is really more efficient.) It is called a disk operating system because it was originally made to be loaded into a computer's memory with a floppy disk each time the computer is started (booted) up.
MS-DOS was released as proprietary software, but decades later after most users had gone to other systems, it was released as free software.
- Paterson, Tim (June 1983). "An Inside Look at MS-DOS". Seattle Computer Products. Seattle. Archived from the original on May 6, 2017.
- Turner, Rich. "Re-Open-Sourcing MS-DOS 1.25 and 2.0". Windows Command Line Tools For Developers. Retrieved 29 September 2018.
- "MS-DOS: A Brief Introduction". The Linux Information Project. Archived from the original on December 14, 2017. Retrieved December 14, 2017.
- "Obsolete Products Life-Cycle Policy". Support. Microsoft. July 30, 2009. Archived from the original on July 6, 2006. Retrieved April 6, 2010.