The computer's master control program. When a computer is turned on, a small "boot program" loads the operating system. Although additional system modules may be loaded as needed, the main part, known ...

The original operating system for IBM PC compatible computers. It is the basic for the current Windows operating system. When people use the term DOS, they are commonly referring to Microsoft DOS or ...

(1) For the Linux-based smart device operating system, see webOS. (2) An operating system that runs in a server on the Web. See Web server. Because all browsers perform "almost" the same no matter ...