bar code

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bar code

Commerce a machine-readable arrangement of numbers and parallel lines of different widths printed on a package, which can be electronically scanned at a checkout to register the price of the goods and to activate computer stock-checking and reordering

bar code

[′bär ‚kōd]
(computer science)
The representation of alphanumeric characters by series of adjacent stripes of various widths, for example, the universal product code.

bar code

(convention)
A printed horizontal strip of vertical bars of varying widths, groups of which represent decimal digits and are used for identifying commercial products or parts. Bar codes are read by a bar code reader and the code interpreted either through software or a hardware decoder.

All products sold in open trade are numbered and bar-coded to a worldwide standard, which was introduced in the US in 1973 and to the rest of the world in 1977. The Uniform Code Council in the US, along with the international article numbering authority, EAN International, allocate blocks of unique 12 or 13-digit numbers to member companies through a national numbering authority. In Britain this is the Article Number Association. Most companies are allocated 100,000 numbers that they can use to identify any of their products, services or locations.

Each code typically contains a leading "quiet" zone, start character, data character, optional check digit, stop character and a trailing quiet zone. The check digit is used to verify that the number has been scanned correctly. The quiet zone could be white, red or yellow if viewed by a red scanner. Bar code readers usually use visible red light with a wavelength between 632.8 and 680 nanometres.

References in periodicals archive ?
The principals of Omniplanar invented MaxiCode, the 2 dimensional symbology presently being deployed by UPS, and hold 30 US patents on bar code and related technologies.
In addition, Azalea offers 2D bar code products like Azalea PDF417 (PDF 417), DataMatrix, and Maxicode.
Metanetics not only has advanced imaging hardware, but is well ahead in the critical areas of software for auto-discrimination and decoding of the major 2-D symbologies, including Maxicode and PDF 417.
The ScanImage 1470B reads a wide variety of symbologies, including linear codes (Code 39, Interleaved 2 of 5, Code 128, ISBT-128, Codabar, Code93, UPC/EAN, Codablock), stacked linear symbology (PDF417, Micro PDF417, TLC39, RSS), matrix/2D codes (Data Matrix, MaxiCode, QR Code, Aztec, Aztec Mesa, Code 49, UCC Composite), postal codes (U.
The labels may contain standard barcodes or new 2-dimensional barcodes like the MaxiCode.
Two-dimensional bar codes, such as PDF417, MaxiCode and DataMatrix, are scanned horizontally and vertically and hold considerably more data in less space.
Other distinct and unique features that separate Imtec's ACCLAIM400(TM) high-performance printer applicator from other applicators on the market include: the use of an electronic drive instead of an air drive, the ability to apply labels containing 2-D codes such as the MaxiCode, and the ability to apply linerless labels (labels that do not require backing material).
All barcode symbologies are supported, including 2-D Maxicode, PDF 417, and QR Code.