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CRC or Cyclic Redundancy Check is a method used to detect the presence of errors in data, by adding a special calculated number to it. It’s like a magical spell that helps you check if a letter’s content got jumbled during the journey. Think of CRC like a secret code written on a treasure map. When you receive the map, you calculate the same code. If it matches the one written, you know the map hasn't been tampered with. Similarly, CRC generates a code from data, ensuring its integrity during transmission or storage.
A cyclic redundancy check (CRC) is an error-detecting code commonly used in digital networks and storage devices to detect accidental changes to digital data. Blocks of data entering these systems get a short check value attached, based on the remainder of a polynomial division of their contents. On retrieval, the calculation is repeated and, in the event the check values do not match, corrective action can be taken against data corruption. CRCs can be used for error correction (see bitfilters).
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