A simple parity-check code can detect the odd number of errors.
It is a technique that checks whether data has been lost or written over when it is moved from one place in storage to another or when it is transmitted between computers.
The primary advantages of parity are its simplicity and ease of use. Its primary disadvantage is that it may fail to catch errors. If two data bits are corrupted, for instance, parity will not detect the error.
A parity checker is designed by using XOR gates on the bits of the data. An XOR gate will output a "0" if the bits are similar, or a "1" if the bits differ.
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