What is a parity piece?
Parity bit is used to check errors within a range of data. One byte consists of eight bits of data, seven that actually contain data and parity bit. Bit helps to ensure that the field is always odd or even, one or zero. The parity bit allows you to check the transmitted data in terms of errors by allowing the receiving computer to ensure that the bits group is either odd or even after data arrives.
When the data is transmitted, the binary digits must correspond to the length of the bits that the recipient expects. If the expected data are even and the data sent with its parity beating is odd, the recipient may refuse data due to an error in parity.
A parity bit helps to ensure that each data field has an even number, for even parity or odd number for odd parity. Adding additional bits to the data packet allows the data to be quickly checked for errors when they are received. Bit parity acts as a code of detection or error detection mechanism, so the data is not received.
For example, assume that the document is transmitted for inspection and the document is contained in one data packet. The data packet with his parity beating is odd. The packet is transmitted to another computer somewhere on the Internet, and the remote server expects a data packet to have a special parity. When the data arrives, the host computer receives a packet with a parity. The host refuses to packet because the parity of the data sent does not match and must be mistaken.
If the data packet is accepted and is out of parity that has the opposite parity piece of what the receiving computer expects, the recipient sends a message to the host that the transmission error has not received the data as intended. The original data packet sender many times transmission after recalculation of paritydat, which can sometimes fix the problem.
Methods of checking errors in parity are far from perfect. Scenario checks of error of parity bit errorsIt is only able to show only odd number of bit errors. If the even number of bits has a bug, the transmission will be reported as correct, even if the data inside the transmission is damaged.