Tom,

I posted some programs to the U2 User group newsletter on this topic in May
2004.  Here's a link to the article:

http://www.u2ug.org/index.php?name=News&file=article&sid=9

The Code 39 barcode is also call 3 of 9 barcoding.  The barcode is designed
with nine bars, three of which are wide.  It appears that your code table
uses a 1 for a narrow bar and a 2 for a wide bar.  As previously noted,
your code table include a tenth separator bar.  Note that a typical Code 39
barcode begins and ends with an asterisk.

My program notes the positions of the three wide bars.  Also, I use a
character list index rather than the ASCII code in order to save typing.

For example, my code for the letter A (ASCII 65) is 169, which means bars
1, 6 and 9 are wide, and the others are narrow.  The code you would need to
use in attribute 65 is 2111121121.

Feel free to contact me directly if you have additional questions.

--Tom Pellitieri
  Century Equipment
  Toledo, Ohio
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