ITanumberthat is used in acomputerprogramtohelptofindorpreventerrors(Definition ofcheck digitfrom theCambridge Business English Dictionary? Cambridge University Press)
Examplesofcheck digit
check digitThese three methods use a singlecheckdigitand will therefore fail to capture around 10% of more complex errors.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.A desirable feature is that left-padding with zeros should not change thecheckdigit.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.A very simplecheckdigitmethod would be to take the sum of all digits (digital sum) modulo 10.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.That result is thecheckdigit, except in the two cases where it is 10 or 11.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.Thecheckdigit(as calculated above) for this sequence is 4.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.The sum of all these numbers modulo 11 is thecheckdigit.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.Specifically, if the difference between two adjacent digits is 5, thecheckdigitwill not catch their transposition.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.Thecheckdigitis computed using a weighted sum of the first six characters.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.The first 9 digits are assigned unique numbers with the 10th digit being acheckdigitfor the identifier.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.The class received new four digit numbers beginning with 1, in which the last number is acheckdigitfor the whole number.FromWikipediaThis example is from Wikipedia and may be reused under a CC BY-SA license.These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.#https://dictionary.cambridge.org//dictionary/english/check-digit##
