Preface
Computers play a key role in our everyday lives. In addition to communication media like television, radio and newspaper, we now have another communication medium, i.e. computers. We use computers to e-mail, to chat, for the Internet browsing, for teleconferencing, for video conferencing, etc. We also use them for e-learning, e-commerce, e-banking, e-governance, e-ticketing and for many more things. And the interesting part is, while we interact with the other media like television, radio, newspaper, etc. to merely get information, the interaction in computers is two ways—we can be a creator as well as a user. We may use a computer as a medium to get more information, as a tool to perform certain activities, or as an integral part of ...
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