A value or character appended to the end of a numeric code, used to check the validity of the code after it is copied or entered, is called a

Acheck digit

Bparity bit

Chash total

Dcontrol total

Explanation

A check-digit is a value/character appended at the end of a numeric code to check the code's validity on transcription.

Derived from ZIMSEC Computer Studies 7014/2 Paper 2, November 2017, Q1

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