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I.T.

   
Information Technology, or IT as it is commonly referred to, is a branch of engineering. It involves the use of computers and software to manage information.
    Information Technology deals with the storage, retrieval, transmission and manipulation of data. The Term 'information technology' is used not only with reference to computers and computer networks, but also for other technologies that are used to distribute information such as telephones, televisions, and telecommunication equipment in general.
    So, now the question is how does computers work. The answers is very straight and simple. As Human being, we can communicate to each other by voice and expressions. Expression tells to another person what the first person wants to say.Now we can say expression is a language which is understand to both person and communicate to each other by this language. As the same way electronic devices(i.e. computers) communicate to each other by language. These language are known as signals. There are two types of signals analog signal and digital signal. In modern technology computer works on digital signal. These signals are to represents by some Number System for better understanding.
    In this course we will learn Number System from scratch. I hope you should also learn carefully for better understanding on the concepts of Number System. 

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