3.7CODE 93
3.8 Code 128
3.9 EAN-8
3.9.1 Enable/Disable EAN-8
3.9.2 Convert to EAN-13
There are two ways for EAN-8 changing, one is converting to EAN-13, another is adding
"0" ahead of EAN-8, and the EAN-8 ID is not change.
If EAN-8 converts to EAN-13, it will be read as same as EAN-13. If add a "0" ahead of
EAN-8, and the EAN-8 ID is not change, the output ID is still EAN-8 ID.
3.9.3 Checksum Output