BASIC VOCATIONAL COMPETENCIES : OPERATING SYSTEM

The operating system (English: operating system; OS) is a set of programs that manage computer hardware resources and provide common services for application software. The operating system is the most important type of system software in a computer system. Without the operating system, the user can not run an application program on their computer, unless the application program boot.

The operating system has a systematic scheduling includes memory usage calculation, data processing, data storage, and other resources.

For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between application programs and the computer hardware,

although the application code is usually executed directly by the hardware and will frequently call the OS or lost by it. Operating systems are found on almost any device that contains a computer-from cell phones and video game consoles to supercomputers and web servers.

Examples of modern operating systems are Linux, Android, iOS, Mac OS X, and Microsoft Windows.

This sitem some screenshots of the current operation

Android:

IOS (Apple)

Linux

OS X

Microsoft Windows

Windows Phone

Unix

nahhh that he had friends all some operating systems that I know of