| Posted: December 05 2003 at 10:27am | IP Logged
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A UPC-A checksum digit can only between 0-9.
The article about UPC-A check digit calculation can be found here:
http://www.morovia.com/education/symbology/upc-a.asp
There is a web page to calculate UPC check digit in the learning center:
http://www.morovia.com/education/utility/upc-ean.asp
An ISBN number can have a checksum digit 10 which uses X to represent it.
Edited by glitch on December 05 2003 at 10:27am
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