The computer is a wonderful invention of modern science. The computer is used widely, so that we can say we live in age of computer. The four main features of a computer are speed, storage, accuracy and ability to do many different functions. It is difficult to find a field where a computer is not used. The computer can store large quantities of data. At homes, computers are used for educational purposes. They are also used to send or receive messages with the help of the internet. It is used at railway stations and at airports. The importance of. computer is decided to give computer education to the children in schools and colleges. Architects and engineers use computers to design buildings. Cartoon films are also made using computers. The space technology has progressed with the help of computers. Missiles, rockets and spacecrafts are launched with the help of computers. Satellites are controlled by computers. But remember computer is a machine, so it should be operated with care.