The operating system is system software that resides within the system. It works as an interface between the user and the hardware means it provides a way for us to interact with the system.

So why do we need an Operating system?

The help of an operating system doesn't require writing a program to perform a particular task. Suppose take an example we want to print some word file directly to the printer there is no interface so we have to write a particular program to perform this specific task.

In our pc Window, Linux is an example of an operating system. The primary functionality of an Operating system is to provide a convenient way to the user.

The functionality of the Operating System:-

1. Resource Management:- This is used in parallel axis(multiple user access a particular system) this time operating system work as a Resource Manager that tells us how much amount of time provides for a particular task.

2. Process Management:- So if multiple processes are running in our computer system how to execute all process that is done by the operating system for this operating system use CPU scheduling.

3. Storage Management:- Storage management is done by the file system. The operating system takes care of how to store data.