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2. Universal Product Code - Wikipedia

   en.wikipedia.org/wiki/Universal_Product_Code

   A UPC barcode. The Universal Product Code (UPC or UPC code) is a barcode symbology that is used worldwide for tracking trade items in stores.. The chosen symbology has bars (or spaces) of exactly 1, 2, 3, or 4 units wide each; each decimal digit to be encoded consists of two bars and two spaces chosen to have a total width of 7 units, in both an "even" and an "odd" parity form, which enables ...

3. Code 39 - Wikipedia

   en.wikipedia.org/wiki/Code_39

   Code 39 (also known as Alpha39, Code 3 of 9, Code 3/9, Type 39, USS Code 39, or USD-3) is a variable length, discrete barcode symbology defined in ISO/IEC 16388:2007.. The Code 39 specification defines 43 characters, consisting of uppercase letters (A through Z), numeric digits (0 through 9) and a number of special characters (-, ., $, /, +, %, and space).

4. File:12345678901-2-23456 barcode UPC (A).svg - Wikipedia

   en.wikipedia.org/wiki/File:12345678901-2-23456...

   Vector image of a bar code, created with "Corel BARCODE WIZARD" and tweaked in Inkscape and WordPad. The barcode is in UPC(A) format, and shows the digits "8284603268", and is for the ASUS Eee PC 1005HA-EU1XBK 10.1-Inch Black Netbook: Date: 3 September 2006, 04:33: Source: Own work: Author: Erin Silversmith

5. File:UPC A.svg - Wikipedia

   en.wikipedia.org/wiki/File:UPC_A.svg

   Original file (SVG file, nominally 667 × 481 pixels, file size: 19 KB) This is a file from the Wikimedia Commons . Information from its description page there is shown below.

6. Interleaved 2 of 5 - Wikipedia

   en.wikipedia.org/wiki/Interleaved_2_of_5

   Interleaved 2 of 5 (ITF) is a continuous two-width barcode symbology encoding digits. It is used commercially on 135 film, for ITF-14 barcodes, and on cartons of some products, while the products inside are labeled with UPC or EAN. ITF was created by David Allais, who also invented barcodes Code 39, Code 11, Code 93, and Code 49.

7. International Article Number - Wikipedia

   en.wikipedia.org/wiki/International_Article_Number

   These barcodes only represent the digits 0–9, unlike some other barcode symbologies which can represent additional characters. The most commonly used EAN standard is the thirteen-digit EAN-13, a superset of the original 12-digit Universal Product Code (UPC-A) standard developed in 1970 by George J. Laurer. [1]