Computer and its studies is a necessary field of expertise that everyone should be aware of. It is not necessary that you should be a master of computer but you should be able to use it, as it is the need of today’s society. Computers play an important role in our lives as they are needed in hospitals, educational institutions, security places, business organizations, libraries, homes, scientific institutions, shopping markets, sports gatherings, festival gatherings and all types of gatherings and other institutions all over the world. It is only because of computers that the world has become a global village. We can talk from our homes to far away places within no time and can deliver all kinds of files to our friends and relations through the usage of computers. Computer has made our life easy. A computer was created for computing fast—a purely mathematical function. Today they are used to forecast the weather, to operate machines, to cut sell to size and even to guide a spacecraft to the moon. Computers help to trace criminals. Computers are used in the airlines — the whole world of airlines functions efficiently with its help. Hotels make use of them from managerial capacities to kitchen and companies use them for accounting and invoicing, etc….