What are the functions of an operating system? Explain.

The functions of an operating system are as follows:

1. Loading itself in the Memory — The operating system has a specific feature to load itself in the memory and manage CPU to execute itself on its own. This process is known as booting.
2. Processor Management — The management of a CPU by an OS is known as processor management.
3. Memory Management — Memory management refers to the process of allocating memory to a program and de-allocating it when it is no longer required.
4. Managing Input/Output Devices (Device Management) — The operating system keeps track of all the devices, enables and controls the input-output (I/O) devices attached to a computer system.
5. File Management — The operating system creates and deletes files, allows back up of files on storage devices, manages files and folders and provides file protection.
6. Ensuring Data Security — It keeps different programs and data in such a way that they don't interfere with each other.
7. Detecting and Correcting Errors — If the supporting hardware or software does not work properly, then the operating system tries to rectify it and also guides the user to take the necessary steps.
8. Loading Application programs in memory — Operating system loads various application programs required by the user and then runs them.