error checking

Error checking is a process used to ensure data is transmitted or stored accurately. It involves adding extra information, like a checksum or special codes, to the original data. When the data is sent or retrieved, this extra information helps detect if any mistakes or alterations have occurred. If an error is found, the system can request a resend or correct the data. This process helps maintain data integrity, reducing mistakes caused by issues like interference or hardware problems, and ensures that the information received or stored is accurate and reliable.