 UPC/EAN
This is the symbol used on items destined for the check-out line. UPC symbols are fixed length, are mandatory in the retail and food industry. They were developed to meet the needs of grocery retailing as it fits 12 digits into a reasonably compact space.
 Code 39
Developed because some industries needed to encode the alphabet as well as numbers into a bar code, Code 39 is by far the most popular bar code symbology of choice. It is typically the non-food standard bar code, and is used for ID, inventory, and tracking purposes in various industries such as manufacturing. However, Code 39 produces relatively long bar codes and may not be suitable if label length is a consideration.
Code 128
This bar code came about when the need for a wider selection of characters arose than Code 39 could provide. When label length is a consideration, Code 128 is a good alternative because it’s very compact and results in a dense symbol. This symbology is often used in the shipping industry where label size is an issue.
PDF147
Known as a 2D (two-dimensional) bar code, this is a high-density, non-linear symbology that reminds you of a crossword puzzle. But the difference between this and the other bar codes listed above is that PDF417 is a portable data file (PDF) as opposed to simply being a reference number. In some countries, driver’s license is printed using 2D bar code. There is room enough to encode your name, photo and summary of your driving record, and other important information.
Source:http://www.material--handling--system.com/barcode.htm |
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Barcode is a fast, easy, and accurate way of entering data. A barcode doesn’t contain descriptive data. Just as your social security number doesn’t contain your name or address, a bar code is also a reference number that a computer uses to look up an associated record that contains descriptive data and other important information. In business, the correct use of bar codes can reduce inefficiencies and improve a company’s productivity.
