Re: UPC Check Digit Algorithm

[dhandy@xxxxxxxxxxx (Douglas Handy)]

Kevin,

>0021.00      C           2         DO   14        M0      20
>0022.00      C           M10,M0    MULT 2         MW0,M0
>0023.00      C                     END  2

Are you sure about line 22.00?  It is weighting the even numbered
positions (counting from the right) by a factor of 2 instead of a
factor of 3.  The UPC and EAN bar codes should have a 3 in factor2 of
line 22 in your code.  The Mod10 check digit as validated by DDS uses
a factor of 2.

Doug
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