CRC Joyus
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The Cyclic Redundancy Check (CRC) is an error-detecting code used to verify data integrity in digital networks and storage devices. The CRC algorithm processes a sequence of data bits using a predefined polynomial divisor, producing a short, fixed-length checksum known as the CRC value. When data is transmitted or stored, the sender calculates the CRC and appends it to the data. The receiver then performs the same CRC calculation; if the computed checksum matches the received CRC, the data is considered error-free. Otherwise, a mismatch indicates data corruption, prompting error-handling measures.
CRC is widely used due to its efficiency and ability to detect common transmission errors, such as bit flips and burst errors. Different CRC standards exist, including CRC-8, CRC-16, and CRC-32, each using different polynomials to suit various applications. For instance, CRC-32 is commonly used in Ethernet and ZIP file formats.
