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What is Parity? | How Parity Works? | Parity | Computer Tips

Parity is a simple form of error detection. A parity bit added to a data indicates if the data has an odd or even number of ones. There are 2 types of parity, Odd parity, and Even parity. In even parity, our objective is to maintain an even number of ones in the overall bits string (overall bits string = data bits + parity bit). If the data has an odd number of ones then we set its corresponding parity bit as 1. But if the data has an even number of ones then we set 0 as its corresponding parity bit. In odd parity, our objective is to maintain an odd number of ones in the overall bits string (overall bits string = data bits + parity bit). If the data has an even number of ones then we set its corresponding parity bit as 1. But if the data has an odd number of ones then we set 0 as its corresponding parity bit. With the help of the parity bit, the system checks for the validity of the received data. Parity works only if there is a change in the "single" bit. But if two or more bits change, then parity fails.