What is computer?

A computer system is a mix of electronic hardware and software.It accepts data as input and processes it to provide us with an output.But,it can only follow the instruction that we give it.

Input

1.An input Device is used to feed information to the computer.

2.It is also used to instruct the computer to perform specific actions,such as opening a file,closing a file or saving a file.

3.The most commonly used input devices on computer are keyboard and mouse.

Process 

1.The process device perform actions as per your instruction and gives the required output.

2.It also stores information in storage devices so that you can view it or use it at later point in time.Some examples of process device is processor and storage devices are Ram,hard drive,and DVD/CD drive.

Output

1.These devices are used to display or produce the result.

2.A simple example of output is anything you view on your computer monitor.Another example of an output device is a printer.