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calculating a check digit

 
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# 1  
Old 02-03-2005
Java calculating a check digit
first post... I work in a system called RTCIS (real time control & information system) that is a warehouse management program. The user interface runs on UNIX. I only have manager prompt command line access so I can't do much other than look around at some SQL tables and stuff. Here's my question... At the command line I can calculate the value of a check digit for a string of numbers (eg: a barcode number) using the unix 'chkd' command. What is the formula behind the calculation? I want to use it in an Access database to validate UPC codes entered in a form.
Thanks!
jim9418
# 2  
Old 02-16-2005
I'm not sure about your specific application's check digit algorithm, but if you just do a Google search for "check digit algorithm" you'll find lots a juicy info.

HTH....James
 
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