Necessity is the mother of invention. The sayings holds true for computers also because computers were invented as a result of man's search for fast and accurate calculating devices. Charles babbage, a nineteenth century professor at cambridge university, is considered to be the father of modern digital computers.
Computer is an electronic machine which is used for many purpose. It performs logical operations on inputs and brings froth accurate answers. According to size they can be distributed in many categories. (1) Super Computers (2) Main Frame Computers (3) Mini Computers (4) Micro Computers. Their prices vary from billion of rupees down to a few thousands of the rupees. Computers can further be classified into monotypes, which are (i) Digital (ii) Analog (iii) Hybird.
Now day computer is used in government offices, banks, educational institutes, hospitals and many other organizations. Computers are mainly used for the purpose of storage of facts and records. It is possible to talk to any one in any part of the world. Students can study in any university of the world while sitting in their home. All of these are great wonders of computer.
The history of computer can be divided into different generations. We are now living in the fourth generation of computers. The fifth generation is yet to come, A coinmon perception is that it will start with the creation and use of artificial intelligence. The future remains to be unseen, but one can give his own ideas or innovations.