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UPC-A
Check Digit
UPC-A is fixed 13 digits barcode and the last digit is check digit. Check digit
is a value caculated from all digits. It is used for checking if the all 13 digits
are right.
Transmit Check
【Pro CMD:99911104】
Do Not Transmit Check
【Pro CMD:99911103】
Transmit Default “0”
The first byte of UPC-A is default to “0”.
Do Not Transmit “0”
【Pro CMD:99911113】
Transmit “0”
【Pro CMD:99911114】
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