A circuit or a device to translate digital
signals of barcodes with
and send upward to the computer through its interface.
1 module bars
of supplementary code of UPC
Add-on version, inserted
between each characters.
To display the numerical value with non-continuous
graduations or indices.
Discrete type is one of the code
type of barcode.
The last space character
doesn't have a meaning (as a white bar), it is treated merely
as a gap. (See continuous