operating systemn. (OS, abbr.)Software that controls the basic functions of a computer and its components, including memory, hardware, system utilities, applications, and network connections.
NotesOn most computers, the operating system is initially loaded from disk using a firmware boot program. Some small, embedded operating systems may be stored and run entirely in firmware. Examples of operating systems include CMS, DOS, Linux, Mac OS X, Unix, VMS, and Windows.
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