What is Operating System? Full Details
An Operating System:
An Operating System (OS) is an intermediary between users and computer hardware .
It provides users associate surroundings during which a user will execute programs handily and with efficiency.In technical terms, it's a code that manages hardware. An OS controls the allocation of resources and services like memory, processors, devices and information.
"An OS could be a program that acts as associate interface between the user and therefore the hardware and controls the execution of every kind of programs".
The most commonly used operating systems that are used for personal computer are these:
Linux,Mac OS, Microsoft Windows XP, Microsoft Windows Vista, Microsoft Windows 7 and UNIX.
A computer without installed an operating system is just an empty box of metal. To make that computer useful, So it's important to install on it the operating system. Operating system perform basic operations, such as getting input devices, transferring data from main memory to the processor for processing and then sending output to the output devices.
Consider figure below which shows that operating system is an interface between users and computer hardware.
Operating system operates on top of hardware and acts as a virtual machine that hides the hardware level complexities from the users and provides them a convenient way of using the system.
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