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 ...

Discover the Android OS, its key features and origins, and how it compares to Apple's iOS. Learn how Google developed Android ...

Apple created the operating system iOS for its iPhone. Since its debut, Apple has unveiled new versions of the software regularly, often adding and enhancing features. iOS was unveiled with the ...

A system software component that is external to the operating system kernel. If the phrase is used to refer to the operating system itself, it is redundant because an operating system "is" software.