- Parity bit is also called Check bit.
- Added to block of data for error detection purpose.
- Used in data transmission to ensure total number of 1's is even or odd.
- Purpose is to ensure data is not corrupted during transmission.
Types of Parity:
1. Even Parity:
- Parity bit is added to the transmitted binary code, then total ones in transmitted binary code includes parity bit is even is called even parity.
- Due to noise disturbance(error) even parity converted into odd parity.
2. Odd Parity:
- Parity bit is added to the transmitted binary code, then total ones in transmitted binary code includes parity bit is odd is called even parity.
- Due to noise disturbance(error) odd parity converted into even parity.
Advantages:
- Errors on a noisy line can be find quickly.
- It detects only single bit error.
- Not able to correct the error data