Introduction

Computer is the one of the most brilliant gifts of science. In this today's era, computer has a great role in every field of life. Computers have brought about a tremendous revolution in every walk of life.  It is very hard to imagine modern life without computers. Now a days, in every field almost every work is dependent on computers. Computers are used in education, health and medicine, science, business, defense  sports and many more fields.

 It is used in too many fields because of its advantages. Computer works faster as compare to human being. It can stores data. Many software like excel, word, power point helps us to edit text, making data entries and keeping records. We can do our hours of work in minutes with the help of the computer. We can also use computer for our entertainment. We can watch movies, play games and listen to music on computers. Education system is depends on the computers. E-Books are replacing the place of others books.  With the help of computer and internet we can communicate with friends and other contracts. We can take advantage of the online system. We can buy things online. One can booked railway and air tickets online. We can get huge information online of  society, politics, technology, economy and anything that we want. By this way computer plays a very important role in every field and we totally depends upon computers for our works.