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DOS (Disk Operating System)

a COMPUTER program which enables a computer to record and retrieve data from a rotating magnetic or vinyl disk. The most widely-used disk operating system is MSDOS, which is used on computers that are compatible with the IBM personal computer.
References in periodicals archive ?
While Chicago does not require DOS, it does incorporate many DOS features to ensure that you can still run DOS applications and your older 16-bit software.
All the earlier versions of Windows were engineered to do double-duty--that is, run both Windows and DOS applications.
After all, DOS can only address 1 megabyte of memory and DOS applications are written so that they avoid using Upper Memory (640K to 1 megabyte).
There are two fundamental differences between DOS applications and Windows applications.
The decision follows a public comment period on the DOS application process which closed on March 18, 2005.
x, 95, 98, NT, 2000 or DOS application -- either by sending keystrokes to the application's window or by passing the data through DDE (Dynamic Data Exchange) conversations.
Now let's consider a case in which you might want to load a TSR for use with a particular DOS application.
What's more likely is that a user might want to transfer some data from a DOS application into an Apple program, or vice versa.
Since Windows can't learn about a DOS application from the program itself, it gains this information from a Program Information File (PIF).
Unlike multiuser UNIX platforms, DR Multiuser DOS enables the users to retain their investment in standard DOS application packages, such as accounting, database management, spreadsheets and word processing, while providing a productive workgroup environment for sharing information and hardware resources.
AMIDiag for Windows fully operates under Windows; it is not a shell running a DOS application underneath.
The CD Plus 200 is a fully DOS compatible system and will therefore run any DOS application.