what is the purpose of operating system

An operating is a set of programs that manges all computer components and operations. When computer is power of,the operating system runs and checks that all parts of the computer.

The main purpose of operating system is ready to computer for user. without operating system a user cannote do anything on computer.Operating system is most important for computer.

operating system manges all operationson the computer after loading in memory. perationg must be installed on everey computer. Without operting system the computer sysytem is nothing.

Another defination of computer system is,operating systems are set of program that are designed to run in the background on computer screen.

Operating systems provides a platform for applications to run and deals with issues that the softwaer may have e.g storage of files

Some Important Operating Systems

Microsoft Windows

linux 

unix 

solaris

Mac OS

List of diffrent functions of operating system

operting system performs the following functions:

Memory Managment

Memory Managment is an important function of operating system. Diffrent programs and data execute in memory in one time. The programe may mix with each other if there is no operating system. The system will not work properly. 

Booting

Botting is aprocess of starting or restarting the computer. Opreating system starts the computer to work properly. It checks the computer and makes it rady to work.

loading and Execution

Any programe is loaded in memory before it can be executed. Operating system is provide the facility to load programe in memory easily and then execute it.

Data security

Data is an most important for user. Data is important part of computer sysytem, if the user data is loss, so that would be a huge loss for him.

Operating system provide the facilty of protect the data.

Process Management

Cpu can perform one task at one time. If there is many task, operating system decide which task should get the CPU.

Providing Interface

The operating system must provide an interface between the user and the computer and also between softwaer and the computer. Most operting system provide the following two types of interface to their users,

Command-line Interface  :  In such interface the user communicate with the operating system by typing typing commands using keyboard. Each commands given to the operating system  activates one of the many programs in the OS.

example of such an interface is the command prompt provide by MS-DOS to its user.

Graphical user Interface  : The graphical user interface  consiste of Windows, Menus, Icons and pointers. The user of the system communicate with the Operating system by selecting commands frome the menus or by selecting different icons with the pointing devices. MS-windows is a well example of the OS with the GUI(Graphical User Interface). In MS-windows user selects commands by using a mouse and keuboard.