Question

what are the needs of operating system in computer

Answer 1

The needs of operating System in computer are:-

[1] It manages the computer's memory and processes, as well as all of its software and hardware.

[2] It allows you to communicate with the computer without knowing how to speak the computer's language.

[3] Sharing of I/O between many programs using the CPU.

Answer 2

In earlier day’s user had to design the application according to the internal structure of the hardware. Operating System was needed to enable the user to design the application without concerning the details of the computer’s internal structure. In general the boundary between the hardware & software is transparent to the user.