Computer is an electronic machine that can do anything according to instruction. The invention of computer is one of the greatest advancements of modern information technology. It is a fairly recent invention. Computer is a substitute to the human brain. Computers are capable of doing extremely complicated work in all branches of learning. In a few minutes a computer can perform calculations that trained mathematicians would need years to complete. The fastest computers can handle millions of problems in a few seconds. It can perform many operations at a time without any confusion. Nowadays computer has become very sophisticated and it can be put to various uses. It is being used in industries, banks, offices, hospitals, laboratories, schools, colleges and in universities. It can run a business, play chess or even compose music. It has greatly benefited us. Human civilization is greatly developed by computer. It has brought about revolutionary changes in our life.
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