Definition :- Computer has become an important part of our life. It is used daily from school to office and computer is being used a lot in homes to handle daily work. It is basically used in hospital for keeping records of patients. In Railway Station for booking tickets through computer Parts of a computer:- Computer is mainly divided into five parts are as follows - 1- Monitor 2- CPU 3- Keyboard 4- Mouse 5- UPS 1- Monitor- Monitor is just like as a Television. It displays the output of your work. It is connected to the CPU and it is mainly used for displaying the output 2- CPU - CPU stands for Central Processing Unit. CPU is also called the 'Brain of the Computer'. It is basically mind of the computer CPU works through the user instructions. CPU have not own feelings or brain. 3- Keyboard - Keyboard is basically used for typing the text in MS Word program. Keyboard have divide into different keys such as numbers keys, alphabet keys, function keys & other keys. 4- Mouse - Mouse is basically used for draw images, pointing screen and lots more. Mouse are two buttons left or right and a scroll wheel in the middle section. 5- UPS - UPS is just like as a Invertor when the light goes down it is carry the light as usual. It is basically carry 15 minutes backup to the computer Advantages of computer - 1- Get a better understanding of data 2- Can help you learn and keep you understand 3- Improve your abilities 4- Can help automate and monitor 5- Easy to use