answersLogoWhite

0


Best Answer

"Parity" refers to the number of 1s in a given binary number. Odd parity means there are an odd number of 1s and even parity means that there are an even number of 1s.

Parity bits are often used as a crude means of error detection as digital data is transmitted and received.

For example,

0b11010100 has 4 1s in it, therefore, it has even parity.

Two devices exchanging data must be set to the same parity. If both are set (strapped) for odd parity, for example, then the sending device must ensure that the number of bits in each word has an odd number of 1s. Likewise, the receiving device must be set to ensure it only receives words with an odd number of 1s.

An odd parity bit is defined as a bit in the word which can be set to ensure odd parity. If the word already has an odd number of 1s, then the parity bit is not set. If the word otherwise has an even number of 1s, the parity bit is set to ensure an odd number of 1s.

The same is true for even parity settings. One way is not necessarily better than the other in theory but, in practice, should observe the convention for the system in question.

Many (if not most) devices provide a connector pin that can be strapped to define either even or odd parity.

User Avatar

Wiki User

13y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How explain the terms even parity and odd parity Is one method bettrer than the other?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What does the method known as parity do?

In RAM, parity is a type of built-in error-checking system. After the 8 bits in a byte receive data, even parity works by adding to total number of 1s. If the number is odd, the parity bit is set to 1; if the number is even, the parity bit is set to 0. When the data is read back, the total is added up again and compared to the first total. If the parity bit is 1, the data is error-free, but if the total is odd and the parity is 0, the chip recognizes a problem and gets rid of the data. Odd parity works in the same fashion, just the other way around.


Explain delcaring a method in java?

A method is a group of commands that are executed when you invoke, or call, the method. It is often called a "function", a "procedure", a "subroutine" in other languages; but in OOP environments, the name "method" is used instead.


What is parity generators and checkers?

Parity bit generator is the error that occures when digital codes are being transferred over channel from one point to other .


What is a parity bit generator and checker?

Parity bit generator is the error that occures when digital codes are being transferred over channel from one point to other .


What does parity refer to in mental health?

Parity is another word for equality. many states have enacted mental health parity laws. The goal of these laws is to force health insurance companies to cover treatment for mental health issues in the same manner that they cover other health issues. This parity rule applies to things like copays and managed treatment tools.


What is the meaning of parity value in foreign exchange?

In a pegged/fixed exchange rate system the value of currency is fixed in terms of gold or the value of other currency.This value is the parity value of the currency


What problem did Einstein solve using the scientific method?

Einsten was a theorist, not an experimentalist. He developed theories to explain other people's data, which doesn't really fit in with the formal scientific method taught in schools.


What is research methodology and research design?

Research methodology is where you describe the how you're going to gather information (your planned methods); this can be survey, interview, literature review etc. And then you explain each method: what are they, what you will do in each method, and other necessary information.


What is odd parity even parity?

Priority: Counting number of ones (1s) in the unit of data, since 0 is zero.Example: a unit of data: 1001 (=0x09) where number of 1s is 2 making even parity.So, the parity bit - the most significant bit will be '0' - "even" which makes the byte 0000-1001 or 0x09.Add 1, makes 10 - or xxxx-1010 still 2 bits set, making also even parity 0x0a.Add 2, makes 11 - or 1000-1011 - 0x8bYou can make a simple transistor as a "gate" we call XOR. If one OR the other pin is raised, then raise pin out. If none or both are set, pin out is set low. The difference between OR and XOR is the result of both.But use the "overflow" 4th pin of an OR "gate", and use this as input to the next bit and you "ADD" binary.


What is the Raid concept?

RAID or Redundant Array of Inexpensive Disks, is a method and technology of using multiple disks for increased size, performance, or redundancy. Imagine a tree, with each branch a different combination of mirroring, concatenation, striping, and parity. Combine this with hot spares, a high reliability can be achieved. The mirroring of drives makes them clones of each other, a physical redundancy in the case one dies. The concatenation of drives makes them appear as one large drive. This reduces redundancy as data is split between drives. The striping of data across drives, improves performance by dividing work. While one drive is writing, another drive can accept the next data to write. This reduces redundancy as data is split between drives. Parity is a calculated value, used to reconstruct data when a drive fails. Parity can be striped, or be assigned to a dedicated drive for parity only. Hot spares are automatically activated, and data is remirrored from the other or reconstructed from parity.


How could you determine whether a sum of numbers such as 127 plus 38 is even or odd?

The parity rules are: Odd + Odd = Even Even + Even = Even Odd + Even = Odd Even + Odd = Odd So the parity where one number is even is that of the other number. This means that you can go through a list of numbers and ignore all the even numbers. Every PAIR of odd numbers has even parity and by the previous paragraph, even parity can be ignored. So you can pair off odd numbers and ignore them.


Explain the principle of null-method of measurement?

The null method is used in measuring the unknown EMF of batteries. The method is about using a potentiometer circuit with the battery of a known and then an unknown EMF connected to it one after the other and locating, in each case, the position of the 'null point'; the point on the potentiometer circuit where the current through the battery is zero.