Hi,
> Maybe the last number is a kind of CRC? In that case, it is only
> needed to verify the number that is read, it is not really a part of
> the barcode information.
The last barcode number is a control digit, but, if is missing you
must verify if the 'scanner' configuration is right because don't
exist ONE barcode standard exist a lot (EAN-13, EAN-8, UPC, small
UPC, 25, 39, etc...). In my graduation project I (my group) made a
supermarket's system, then I learn much about barcodes. I had a small
book about it but I can't plunder it from library. :)
Commomlly, the hardware checks the control digit, but I don't
remember if it is returned for computer.
I've a control digit calculation routine in BASIC (MS-BASIC), I'll
create a version of MSX. Please wait...
>>I would like to get any information on how to make own bar codes.
I can send my program but it only runs with compatible EPSON 9 pins
printers...
---
Giovanni Nunes - http://www.geocities.com/ResearchTriangle/2472/
Email: [EMAIL PROTECTED]
-----------------------------------------------------------------
"... the world is grown so bad. That wrens make prey where eagles
dare not perch." - Duke of Gloucester, Richard III (Act.1/Sc.3)
<eom>
****
MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED] and put
in the body (not subject) "unsubscribe msx [EMAIL PROTECTED]" (without the
quotes :-) Problems? contact [EMAIL PROTECTED] (www.stack.nl/~wiebe/mailinglist/)
****
