10 EVOLUTION 1 SYSTEM MANUAL Issue Issue 1.1 20 Dec 2006
UPC-A: UPC-A encodes 12 characters (4 widths)
Numbers only
It includes a 1-digit system code (normally 0)
10 digits are the data characters
Checksum digit
If the Check Character flag is set the software will calculate the optional
check character (modulus 10).