Question

What is meant by odd parity and even parity?

Answer 1

A parity bit is a bit, with a value of 0 or 1, that is added to a block of data for error detection purposes. It gives the data either an odd or even parity, which is used to validate the integrity of the data.

Parity bits are often used in data transmission to ensure that data is not corrupted during the transfer process. For example, every 7 bits of data may include a parity bit (for a total of 8 bits, or one byte). If the data transmission protocol is set to an odd parity, each data packet must have an odd parity. If it is set to even, each packet must have an even parity. If a packet is received with the wrong parity, an error will be produced and the data will need to be retransmitted.

The parity bit for each data packet is computed before the data is transmitted. Below are examples of how a parity bit would be computed using both odd and even parity settings.

Answer 2

Odd Parity and Even Parity:

Even Parity:

• The total number of bit in a message is even.

• The number contains the odd parity if it has the odd number of 1 bits

• Even parity is also used in the asynchronous mode of communication system which contains the even number of bits.

• It is used to check the memory in storage devices.

Odd Parity:

• The total number of bit in a message is odd.

• The number contains the Even parity if it have the Even number of 1 bits.

• Odd parity is used in the asynchronous mode communication system. which indicates that the parity of each set bit has an 'odd number of bits'.

• The odd parity is used in the process of Error detection.

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