operating system is something that helps us to operate the computer.there are so mny types of os's.not only computers,even ovens,alarm clocks,and tvs have an operating system.(eg- I am having windows8!!)
os is nothing but to control the instructions and execute.and its contain some kind of conditions in the form of programing.


The system by which we control computer system is known as operating system

the (os) is system softwate that manages computer and the devices connected to it. os is tresponsible for managemant and coordination of activities and the sharing of the limited resources of computer. the os acts as a host for other app s/w.....
the low-level software that supports a computer's basic functions, such as scheduling tasks and controlling peripherals.