Operating System

Topics: Operating system, Graphical user interface, Computer Pages: 3 (638 words) Published: February 12, 2015
 Operating System
An operating system (OS) is a collection of software that manages computer hardware resources and provides common services for computer programs. It is a program designed to run other programs on a computer. The operating system is an essential component of the system software in a computer system. Application programs usually require an operating system to function. Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources. A computer’s operating system is its most important program. It is considered the backbone of a computer, managing both software and hardware resources. Operating systems are responsible for everything from the control and allocation of memory to recognizing input from external devices and transmitting output to computer displays. They also manage files on computer hard drives and control peripherals, like printers and scanners. The operating system of a large computer system has even more work to do. Such operating systems monitor different programs and users, making sure everything runs smoothly, without interference, despite the fact that numerous devices and programs are used simultaneously. An operating system also has a vital role to play in security. Its job includes preventing unauthorized users from accessing the computer system. There are multiuser, multiprocessing, multitasking, multithreading, and real-time operating systems. A multiuser operating system enables multiple users to run programs simultaneously. This type of operating system may be used for just a few people or hundreds of them. In fact, there are some operating systems that are used to allow thousands of people to run programs at the same time. A multiprocessing operating system allows a program to run on more than one central processing unit (CPU) at a time. This can come in very handy in some work...
Continue Reading

Please join StudyMode to read the full document

You May Also Find These Documents Helpful

  • Computer Operating System Essay
  • History of Operating Systems Essay
  • Essay on EVOLUTION OF THE OPERATING SYSTEM
  • Essay on Memory and Process Manager Functionality Introduction to Operating Systems
  • Essay about Operating Systems
  • Essay about Operating System
  • Operating Systems Essay
  • Operating Systems Essay

Become a StudyMode Member

Sign Up - It's Free