without an operating system you would not be able to use your computer. the OS provides the interface through which you work with the system. it passes your command to the program, governs the programs use of the CUP and memory. and communicate the output of the programs back to you. the OS also keeps the different programs processes running properly. the relationship among users, application software, operating system software and computer hardware.

the main function of the OS is to interact with all the hardware elements of your computer. to do this, it must have the appropriate device drivers.