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  2. List of GS1 country codes - Wikipedia

    en.wikipedia.org/wiki/List_of_GS1_country_codes

    Code Country 001–019: UPC-A compatible - United States: 020–029: UPC-A compatible - Used to issue restricted circulation numbers within a geographic region [1] 030–039: UPC-A compatible - United States drugs (see United States National Drug Code) 040–049: UPC-A compatible - Used to issue restricted circulation numbers within a company ...

  3. GS1 - Wikipedia

    en.wikipedia.org/wiki/GS1

    In 1973, the Universal Product Code (UPC) was selected by this group as the first single standard for unique product identification. In 1974, the Uniform Code Council (UCC) was founded to administer the standard. [1] On 26 June 1974, a pack of Wrigley's chewing gum became the first ever product with a barcode to be scanned in a shop. [1] [3]

  4. 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 ...

  5. List of country calling codes - Wikipedia

    en.wikipedia.org/wiki/List_of_country_calling_codes

    Worldwide distribution of country calling codes. Regions are coloured by first digit. Officially known as telephone country codes, but also sometimes referred to as country calling codes, country dial-in codes, or historically international subscriber dialing (ISD) codes in the U.K., these dialing sequences are telephone number prefixes for reaching subscribers in foreign countries or areas ...

  6. Template : Unicode chart Symbols and Pictographs Extended-A

    en.wikipedia.org/wiki/Template:Unicode_chart...

    2. ^ Grey areas indicate non-assigned code points Template documentation [ view ] [ edit ] [ history ] [ purge ] {{ Unicode chart Symbols and Pictographs Extended-A }} provides a list of Unicode code points in the Symbols and Pictographs Extended-A block.

  7. 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.