Introduction to Operating System (OS):
An Operating System (OS) is a system software which serves as an interface between a user and a computer.
This controls input, output and other peripheral devices such as disk drives, printers and electronic gadgets. The functions of an Operating System include file management, memory management, process management and device management and many more.
Without an Operating System, a computer cannot effectively manage all the resources. When a computer is switched on, the operating system is loaded in to the memory automatically. A user cannot communicate directly with the computer hardware, unless an operating system is loaded.
Some of the popular Operating Systems used in personal computers and laptops are Windows, UNIX and Linux. The mobile devices mostly use Android and ioS as mobile OS.
Operating System has become essential to enable the users to design applications without the knowledge of the computer’s internal structure of hardware. Operating System manages all the Software and Hardware. Most of the time there are many different computer programmes running at the same time, they all need to access the Computers, CPU, Memory and Storage. The need of Operating System is basically - an interface between the user and hardware.
Operating System works as translator, while it translates the user request into machine language(Binary language), processes it and then sends it back to Operating System. Operating System converts processed information into user readable form
The main use of Operating System is
• to ensure that a computer can be used to extract what the user wants it do.
• Easy interaction between the users and computers.
• Starting computer operation automatically when power is turned on (Booting).
• Controlling Input and Output Devices
• Manage the utilization of main memory.
• Providing security to user programs.