Parity Bits
Parity bits are a simple error-detection technique used in digital communication and data storage to ensure data integrity. They involve adding an extra bit to a binary data unit (like a byte) to make the total number of 1s either even (even parity) or odd (odd parity). This allows the receiver to detect single-bit errors by checking if the parity matches the expected value, though it cannot correct errors or detect multiple-bit errors.
Developers should learn about parity bits when working with low-level systems, networking protocols, or embedded devices where basic error detection is needed, such as in serial communication (e.g., UART), memory systems, or simple data transmission. It's a foundational concept for understanding more advanced error-correcting codes like Hamming codes or CRC, and is useful in scenarios where hardware simplicity or minimal overhead is prioritized over robust error correction.