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DOS

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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.
Collins Dictionary of Business, 3rd ed. © 2002, 2005 C Pass, B Lowes, A Pendleton, L Chadwick, D O’Reilly and M Afferson
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References in periodicals archive
Only both would tell you that DOS stands for "Disk Operating System." No sir, computerese is not for the faint of heart.
Buzzwords
0-This is the latest version of the disk operating system and, according to Harris, it improves computing capabilities by increasing memory, adding a feature that recalls the last command the computer executed, offering a more intuitive screen-editing process, and providing immediate help when the user needs it.
Computer advice, wrapped with a ribbon
The standard disk operating system (DOS) for PCs contains another significant vulnerability in how certain utilities store and copy data.
Computer vulnerabilities
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