A salesclerk enters a customer's six-number customer account.The computer program uses the first five numbers to calculate a sixth number.This resulting number is then compared to the sixth number entered by the sales clerk.This is an example of a

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This scenario describes the use of a check digit, which is a form of error detection used to ensure that data is entered correctly. The sixth number is calculated using the first five numbers to create a unique number that is associated with the account. The salesclerk then enters the sixth number, and the computer checks to see if it matches the calculated number. If the numbers do not match, then an error has occurred, and the data is rejected. This process helps to ensure that data is accurate and reduces the likelihood of errors in the system.

A Salesclerk Enters a Customer's Six-Number Customer Account