operating systems


A operating system is the software component of a computer system that is responsible for the coordination of activities and the sharing of the resources of the computer.


The operating system is the most important program that runs on a computer.Every computer must have an operating system to run other programs. computer must have an operating system to run other programs. Operating systems do basic tasks, such as recognizing input from the keyboard , sending output to the display screen, keeping track of files and directions on the disk, and controlling peripheral devices such as drive disks and printers. For large systems, the operating system has more responsibilities and powers. it makes sure that different programs and users are running at the same time and do not interfere with each other. The operating system is also responsible for security, ensuring that unauthorized users do not access the system.
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examples of an operating system

DOS (Disk Operating System) was the first widely-installed operating system for personal computers.

GUI - Short for Graphical User Interface, a GUI Operating System contains graphics and icons and is commonly navigated by using a computer mouse.

Multi-user - A multi-user operating system allows for multiple users to use the same computer at the same time and different times.

Multiprocessing - An operating system capable of supporting and utilizing more than one computer processor.

windows 7

windows 8

windows xp


Operating Systems 1 - Introduction