Today in the new millennium life can’t be imagined without computer at home, school or in an office. It is one of the greatest discoveries of modern science. This wonderful machine was invented by British scientist Charles Baffage. Computer is an electronic device and acts as a data processing device. It can store huge data. These data could be used in many folds in our day to day lives. Artists and engineers can use this computer for graphic designs. Computer has great role in accounting, for getting correct information easily and quickly. Through these device experts and executives make various planning and programmes. It reduces huge man power in the accounting field and in office management. So it is greatly economic with less hazards.