Operating System

Define Operating System(OS):- Os is system software that manages computer hardware and software resources and provides common services for computer programs. The application programs make use of the operating system by making requests for services through a defined application program interface (API). There are many OS available in the market today some of them are Microsoft Windows, Apple mac OS , Linux , Android and Apple's IOS. I personally use the Microsoft Windows.

Types of OS.

The three most common operating systems for personal computers are Microsoft Windows, Apple Mac OS X, and Linux.

• The Windows, OS X, and Linux logos.
• The Windows GUI.
• The OS X GUI.
• Windows 7.
• Mac OS X Lion.
• Ubuntu Linux.
• Apple iOS running on an iPad.

Operating System Components

• Process Management. Process is a program in execution-numerous processes to choose from in a multi-programmed system.
• Memory Management. Maintain bookkeeping information.
• I/O Device Management.
• File System.
• Protection.
• Network Management.
• Network Services (Distributed Computing).
• User Interface.