Paritätsbit

Paritätsbit is a simple error detection method used in digital communications and data storage. It involves adding an extra bit to a binary data stream to ensure that the total number of 1s in the data is either even or odd, depending on the chosen parity scheme. There are two main types: even parity and odd parity. In even parity, the parity bit is set to 0 if the number of 1s in the data is already even, and set to 1 if the number of 1s is odd. This makes the total count of 1s (including the parity bit) always even. Conversely, in odd parity, the parity bit is adjusted so that the total number of 1s is always odd. When the data is received, the parity is recalculated. If the recalculated parity matches the received parity bit, it is assumed that no error has occurred. If there is a mismatch, it indicates that at least one bit error has occurred during transmission or storage. Paritätsbit is effective at detecting single-bit errors. However, it cannot detect errors where an even number of bits are flipped, as these errors will not change the parity. Despite its limitations, Paritätsbit is easy to implement and requires minimal overhead, making it suitable for applications where simplicity and low computational cost are prioritized.