What are the functions of Operating System?

The functions of Operating System are as follows:

1. Processor Management — An operating system manages the working of the processor by allocating various jobs to it. It also ensures that each process and application receives enough time by the processor to function properly.
2. Memory Management — An operating system manages the sharing of internal memory among multiple applications. It assigns memory to various programs whenever required. It also frees the memory when it is not in use.
3. Device Management — An operating system controls the working of all input and output (I/O) devices.
4. File Management — An Operating System keeps track of information regarding creation, deletion, transfer, copy, and storage of files in an organized way.
5. Error Detection and Security — It provides security by means of passwords to prevent the misuse of a computer.
6. Job Scheduling — In a multitasking Operating System where multiple programs run at the same time, the Operating System determines which applications should run in which order and how much time should be allocated for each application in turn.