Computer is an electronics device, it have many parts in hardware and software, all the thing which wo can touch is called hardware and all the thing in side the screen which we cannot touch is called software , todays computer science is very important in over life , its use in anywhere offices, homes and any other places where he ia required, computer save the time of the persons, and done the work in fast way, computer is a fastest way of communication in any place in side the country and outside the country