Code 11
Code 11 is a barcode symbology developed by Intermec in 1977. It is used primarily in telecommunications. The symbol can encode any length string consisting of the digits 0-9 and the dash character (-). One or two modulo-11 check digit(s) can be included.
It is a discrete, binary symbology where each digit consists of three bars and two spaces; a single narrow space separates consecutive symbols. The width of a digit is not fixed; three digits have one wide element, while the others have two wide elements.
The valid codes have one wide bar, and may have one additional wide element (bar or space).
| Code | Meaning | Code | Meaning | |
|---|---|---|---|---|
| ▌▌█ | 0 | ▌▐▌▌ | 6 | |
| █▐▐▌ | 1 | ▌▌▐▌ | 7 | |
| ▌▐▐▌ | 2 | ▐▌▌▐ | 8 | |
| ▐▌▐▐ | 3 | █▐▐ | 9 | |
| ▌█▐▌ | 4 | ▌█▐ | - (dash) | |
| █▐▌▌ | 5 | ▐▐▌▐ | * (start/stop) |
| Wide element |
Wide bar | ||
|---|---|---|---|
| Left | Middle | Right | |
| Left bar | 9 | 5 | 1 |
| Left space | 3 | 6 | 2 |
| Middle bar | 5 | - | 4 |
| Right space | 8 | * | 7 |
| Right bar | 1 | 4 | 0 |
External links
| Linear barcodes | ||
|---|---|---|
| Post office barcodes | ||
| 2D barcodes (stacked) | ||
| 2D barcodes (matrix) | ||
| Polar coordinate barcodes | ||
| Other | ||
| Technological issues | ||
| Other data tags | ||
| Related topics | ||
