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Definition of "cyclic redundancy check (CRC)" |
Is used to detect transmission errors over communication channels in digital systems. When using the CRC technique, the modulo2 sum of the message bits is calculated after grouping them in a special way and then appended to the transmitted message and used by the receiver to determine if the message was received correctly. The number of bits used in the CRC-sum is typically 8 or 16, depending on the length of the message and the desired error-detection capability. A value calculated from a block of data to be stored or transmitted with the data block as a check item. CRCs are generated using a shift register with feedback and are described by the length of the register and the feedback terms used. |
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