OPERATING SYSTEM

Operating system

Operating system

An operating system is a program that acts an intermediary between a user of a computer and the computer hardware. The purpose of an operating system is to provide an environment in which a user can execute programs. The main purpose of an operating is to make the computer system convenient to use and user can the computer hardware in an efficient manner. This paper explains how an operating system supports the requirements for managing security, memory management, and the use of multiprocessing.

There are mainly five types of operating systems- Multiuser, Multiprocessing, Multitasking, Multireading and Real-time operating systems. A Multiuser OS enables multiple users to use it at the same time. A Multiprocessing OS run programs on more than one CPU at a time. Multitasking OS enable users to run more than one program at a time. Multireading system allows various parts of one program to use at the same time. A Real-time OS makes it possible for the computer to respond to inputs instantly. Most of the operating system comes under one or more of these types.

All computer devices like videogame consoles, desktop computers, supercomputers and smart phones consist of operating systems of some sorts.

An Operating System generally performs these services:-

Manages the sharing of internal memory to multiple applications.

Manages inputs and outputs to and from hardware devices.

It sends messages to specific applications and the user about the system status and any occurred error.

It controls the management of data send to hardware by an application, for example printing data send to a printer.

 It manages how to divide the programs to run in processors.

 In a multitasking computer the OS decides which application should run in what order.

An operating system is similar to a government. The components of a computer system are its hardware, software, and data. The operating system provides the means for the proper use of these resources in the operating system. Like a government, the operating system performs no useful function by itself. It simply provides an environment within which other programs can do useful work.

Nowadays, most of the computers are using the Window as their operating system. Microsoft-designed computer operating system, a program that controls the basic functions of personal computers. Windows started life as Microsoft's take on a graphical user interface (GUI). Windows 3.0, Window 3.1, and Window 3.11 were the three earliest versions of Microsoft's Windows operating system. Windows ...