An extra character added to a numeric code as a device to test the accuracy of data entered into a computer system is called a:
A) control digit
B) check digit
C) mnemonic digit
D) significant digit

Question

Quizplus · Accepted Answer

A check digit is an extra character added to a numeric code to verify its accuracy. It helps in identifying errors made during data entry or transmission. Control digit, significant digit, and mnemonic digit are not related to this concept.

An Extra Character Added to a Numeric Code as a Device