Operating System

Operating System

1. what is a operating system?

   • the low-level software that supports a computer's basic functions, such as scheduling tasks and controlling peripherals

2. what is the purpose of he operating system?

   • An operating system (OS) is software that manages computer hardware and software resources and provides common services for computer programs. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function.

3. what are the most common operating systems?

   • Examples of popular modern operating systems include Android, BSD, iOS, Linux, OS X, QNX, Microsoft Windows, Windows Phone, and IBM z/OS. All these examples, except Windows, Windows Phone and z/OS, share roots in UNIX.

4. what are the functions of a operating system?

   • Booting the computer. Performs basic computer tasks eg managing the various peripheral devices eg mouse, keyboard. Provides a user interface, e.g. command line, graphical user interface (GUI)

5. what is a GUI?

   • In computing, a graphical user interface is a type of interface that allows users to interact with electronic devices through graphical icons and visual indicators such as secondary notation, as opposed to text-based interfaces, typed command labels or text navigation.

6. what is a CLI?

   • The CLI was the primary means of interaction with most computer systems until the introduction of the video display terminal, Unix systems and personal computer systems including MS-DOS, CP/M and Apple DOS.