Methods of Error Detection

Error checking

The process of ensuring that data is received correctly and can be processed without issues in data transmission.

Interference

Disturbances in wired or wireless technology that can cause errors in data transmission, such as signal degradation or electromagnetic interference.

Parity checks

Error detection method that determines if the number of 1's in a byte matches the agreed parity.

Checksums

Error detection method that calculates a value based on the transmitted data to check for errors.

Echo checks

Error detection method that involves transmitting received data back to the sender to check for errors during transmission.

Parity bits

Additional bits added to binary values to create 8-bit binary values, used to identify errors through odd or even parity.

Check digits

Digits added to data blocks to determine if the data has been corrupted, examples include ISBN numbers and barcodes.

ISBN numbers

International Standard Book Number, a unique identifier for books, used as an example for calculating check digits.

Barcodes

Visual representation of data, used as an example for calculating check digits.

Custom check digit algorithm

A specific algorithm used in computer science to calculate a check digit byte based on the sum of all the bytes in a transmitted block of data.

Automatic Repeat Request (ARQ)

A protocol used to notify the sender of errors in transmitted data and request retransmission if necessary.