Answer:
Foo I got you
Step-by-step explanation:
Parity checking is a simple error-detection technique used in digital communication. It involves adding an extra bit (the parity bit) to a group of bits to ensure that the total number of set bits (usually 1s) in the group is either even or odd, depending on the type of parity used. Here's how to perform parity checking:
1. Decide on Parity Type:
- Even Parity: Ensure the total number of set bits in the group (including the parity bit) is even.
- Odd Parity: Ensure the total number of set bits in the group (including the parity bit) is odd.
2. Calculate Parity Bit:
- For even parity, calculate the parity bit so that it makes the total number of set bits even.
- For odd parity, calculate the parity bit so that it makes the total number of set bits odd.
3. Add the Parity Bit:
- Insert the calculated parity bit at the chosen position within the group of bits. This position can be at the beginning (as the leftmost bit) or the end (as the rightmost bit) of the group.
4. Transmit or Store Data:
- Send or store the data along with the parity bit.
5. Verify Parity:
- When receiving or retrieving the data, count the number of set bits (1s) in the group, including the received parity bit.
6. Check for Errors:
- For even parity, if the count of set bits (including the received parity bit) is not even, an error may have occurred.
- For odd parity, if the count of set bits (including the received parity bit) is not odd, an error may have occurred.
7. Correct or Request Resend (Optional):
- If an error is detected, you may choose to request a resend of the data or use more advanced error-correction techniques if available.
Parity checking is a basic method for detecting errors, but it cannot correct errors; it can only indicate when errors have occurred. More advanced error-checking and error-correction techniques like CRC (Cyclic Redundancy Check) and Hamming codes are used when higher levels of error detection and correction are required.