Re: UPC Check Digit Algorithm

Doug,

this particular code was used to create a check digit (mod10) on a part
number... we do not use UPC. So I cant comment (but I did pass along the web
page!)

-----Original Message-----
From: Douglas Handy <dhandy@isgroup.net>
To: MIDRANGE-L@midrange.com <MIDRANGE-L@midrange.com>
Date: Tuesday, December 15, 1998 10:51 AM
Subject: Re: UPC Check Digit Algorithm


>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.
>


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