CRC (Cyclic Redundancy Check)

Cyclic Redundancy Check (CRC) is a method used to detect errors in digital data during transmission or storage. It works by treating data as a complex number and dividing it by a predetermined pattern (called a polynomial). If the data arrives unchanged, the division's remainder is zero; if errors occur, the remainder changes. This helps systems quickly identify corrupted data, ensuring integrity. CRC is widely used in network communications and storage devices to reliably verify that data remains accurate from sender to receiver.