Technical aspects of data communication (3rd ed.)
Technical aspects of data communication (3rd ed.)
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In modern computer systems, data is continuously transferred between a processor and its peripherals, or between processors connected by means of a network. Errors may be introduced during the reading, writing, or actual transmission of this data. Consequently, error control has become an integral part in the design of modern computers and communication systems. The most commonly used methods for error detection involve the addition of one or more redundancy bits to the information-carrying bits of a character or stream of characters. These redundancy bits do not carry any information; they are merely used to determine the correctness of the bits carrying the information.