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  Introduction of Digital World The Digital world, a world of digital technology, is made of digital systems and technology in contemporary society. The digital world is a complex world with varieties of technical things; however, it can also be regarded as simple as people want. For instance, there are many products that belong to the digital world, such as telephone and phonograph. These two examples are common products in people’s daily life, and they are very simple. But how do these products work? Now let us take a first look at the system used in the digital world. This is a very good illustration of how the digital world works. Technical products in the digital world have different constructions, but they have the same system. According to the picture showed above, the system consists of several parts: input transducer, transmitter, transmission channel, receiver, and an output transducer. The message, or the information, can be transmitted through these parts. Now t...