check digit

Definitions

Banking

  • noun the last digit of a string of computerised reference numbers, used to validate the transaction

Computing

  • noun an additional digit inserted into transmitted text to monitor and correct errors

Electronics

  • A numeric digit which is added to a set of digits for error detection. When a given set of digits, such as an account number, is entered into a computer, a check digit is calculated and incorporated into it. When the number is stored, or subsequently accessed, the check digit is recomputed and compared to the original check digit.

Information & Library Science

  • noun a number added to a numeric code to enable a computer program to detect any errors in the code
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