error detection and correction

Error detection and correction are methods used in digital communication to ensure data is transmitted accurately. During transmission, data may get corrupted due to noise or interference. Error detection involves adding extra information, called checks or codes, to identify if errors occurred. If an error is detected, correction mechanisms can fix or request a resend of the data. Techniques like parity bits, checksums, or advanced codes like Hamming are used. These processes help maintain data integrity, ensuring information arrives correctly even in imperfect transmission conditions.