Computer is an electronic device used in almost every field even where it is most unexpected. That is why this age is called as the era of IT. And now we cannot imagine a world without computers. It is made up of two things one is the hardware and other is software. All physical components of computer like keyboard, mouse, monitor etc comes under the hardware whereas all the programs and languages used by the computer are called software. These days computers are the tools for not only engineers and scientists but also they are being used by millions of people around the world. Computers have become an integral part of our lives. Be it the desktop computers or laptop computers, both have various advantages in our daily life. The landscape of global communication has changed since computers have been introduced in our society. Importance of computers can be attributed to the fact that almost every sphere of our life is affected by computers. Information technology (IT) is a whole new industry that has developed after the introduction of computers.
