Table 2.2. Structure of Code 128
|one of three start codes
"START "=103, or
|the data itself||a check character||a stop character||Termination bar of 11|
We will now code the above example, HI345678, in Code 128. As we calculated in the Checksum Digit Calculation section, the checksum digit is 67. So we must also code the checksum digit at the end of the message.
We encode each digit using the encoding table above:
This is shown in the following graphical representation where the bar code has been sectioned-off into areas that reflect each of the 10 components just mentioned.
Also others describe the structure Code 128 like this:
Table 2.3. Structure of Code 128 with quiet zone
Then this picture illuminates it well: