Int Check

Some articles on check:

International Standard Book Number - Check Digits - ISBN-13 Check Digit Calculation
... official manual covering some ISBNs issued from January 2007, describes how the 13-digit ISBN check digit is calculated ... The calculation of an ISBN-13 check digit begins with the first 12 digits of the thirteen-digit ISBN (thus excluding the check digit itself) ... A zero (0) replaces a ten (10), so, in all cases, a single check digit results ...

Famous quotes containing the word check:

    When you go out, check the look of the sky; when you come in, check the looks on people’s faces.
    Chinese proverb.