Synopsis Information Technology, though relatively, a new stream is as vast as a sea. It's perhaps the most relevant and most applied among the disciplines, in currency, in the modern context. Further, it has earned new world order and the globalization. In today's world, each and every awakened individual has to be fully aware of what Information Technology is all about. This exhaustive work is meant for the laymen and the students alike. It's an introductory volume and as well as a semi-text book, in itself.