Barcode are graphical representations of a determined value or a data sequence.

Barcode divides into two groups:

- Numeric barcodes and
- Alphanumeric barcodes.

Where alphanumeric barcode are capable to represent numbers, letters and characters and special function.

Barcode are differentiated between itself for the symbology rules. Each symbology treats as the data will be codified and this treatment includes:

- Precision: Simple or double treatment.
- Star and Stop characters rules.
- Parity verification.
- Check digit calculation.
- Graphical Relation between the elements.

If you want to know more about each barcode symbologies selecting an option in the left menu.