Binary information transmitted through some form of communication medium
is subject to external noise that could change bits from 1 to 0, and vice versa.
An error detection code is a binary code that detects digital errors during
transmission. The detected errors cannot be corrected but their presence is
indicated. The usual procedure is to observe the frequency of errors. If errors
occur infrequently at random, the particular erroneous information is transmitted
again. If the error occurs too often, the system is checked for malfunctionshow more...