Humans are highly dependent on technology. One of the foundations of technology is computers. The modern age is an age of science. And computer is the greatest creation of modern science. We realize that the usability of computer increasing day by day. It take’s place at large number of government and privet office. It also reduce the work time and number of labor and increasing accuracy. Now we feeling that it’s a part of our daily life. Now the world run base on information and most information gather and distribute by computer and internet.