Barcode is the small image of lines (bars) and spaces that is machine readable representation of information in a visual format, used to retail store items, identification cards, and postal mail to identify a particular product number, person, or location. The barcode uses a sequence of vertical bars and spaces to represent numbers and other symbols. A bar code symbol typically consists of five parts: a quiet zone, a start character, data characters (including an optional check character), a stop character, and another quiet zone.
Barcodes is an optical machine-readable representation of data that can easily readable by handheld optical scanners called barcode readers or barcode imager for 2D codes and transfer to computer via barcode software. The reader uses a laser beam that is sensitive to the reflections from the line and space thickness and variation. The reader translates the reflected light into digital data that is transferred to a computer for immediate action or storage.
The primary purpose of a bar code is to identify the product by labeling the item with a bar code containing a unique number or character string. Bar codes are typically used with a database application where the data encoded in the barcodes is used as an index to record the detailed information about the item that is being scanned. Bar codes also provide, a quick and error free means to input the data into an application running on a computer. By using barcodes, the potential for errors from manual data input is eliminated.
Barcode symbology is the different barcode standards that are used for barcode generations and serves various users, industries, or other geographic needs. Some of the most common barcode standards used world-wide are Codabar, Code 128, Code 128 SET A, Code 128 SET B, Code 128 SET C, Code 39, Code-93, EAN-13, Code 39 Full ASCII, EAN 8, Industrial 2 of 5, Interleaved 2 of 5, ISBN-13, ITF-14, LOGMARS, MSI Plessey, Planet, Postnet, Standard 2 of 5, UCC/EAN-128, UPC-A, UPC-E, UPSC Stack Label, UPSC Tray Label, USS-93 and more than 26 barcode fonts.
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