Operating system is like soul of computer. It is a significant part of system. It is actually a software program which serves as connection between hardware devices, programs and computer systems. Your hardware parts will not work without the command of your OS. Ready-made applications and programs are useless if the pc has no operating system.
Operating system manages all the folders and files in computer. It accepts instructions from the input devices like keyboard, mouse, it gives output of the task performed in the form of soft copy and hard copy. OS controls the other attached devices like printers, Pen Drive, Webcam.
The operating system can be categorized in following types.
1. Multiprocessing: This supports any program to operate on more than one CPU.
2. Multitasking: More than one program can be run with this system. With Windows 7 user can work on unlimited programs.
3. Multi-users: Hundreds of or thousands of user can work on this using this system.
4. Multi-threading: In this type O/S allows the various functions of the one program to run simultaneously.
There are many brands present in market viz. Windows, Linux, UNIX, ios, macintosh, solaris etc. Windows is widely used and has been developed by Microsoft company. There are various versions of Windows like Windows 98, Windows XP, Windows 7, Windows 8 etc. These systems are compatible with the personal computers. MacOS and iOS are developed by Apple Company and compatible only with Apple PCs and iphones respectively. Android is operating system owned by Google and used for mobile phones.
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