dido:public:ra:xapend:xapend.a_glossary:b:barcode
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dido:public:ra:xapend:xapend.a_glossary:b:barcode [2021/07/21 20:41] nick |
dido:public:ra:xapend:xapend.a_glossary:b:barcode [2021/10/03 16:57] (current) 51.222.253.17 ↷ Links adapted because of a move operation |
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| ===== Bar Code (Barcode) ===== | ===== Bar Code (Barcode) ===== | ||
| - | [[dido:public:ra:xapend:xapend.a_glossary| Return to Glossary ]] | + | [[dido:public:ra:xapend:xapend.a_glossary:start| Return to Glossary ]] |
| - | **Bar Code (Barcode)** is the small image of lines (bars) and spaces that is affixed to retail store items, identification cards, and postal mail to identify a particular product number, person, or location. The code 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. | + | **Bar Code (Barcode)** is the small image of lines (bars) and spaces that is affixed to retail store items, [[dido:public:ra:xapend:xapend.a_glossary:i:identification|identification]] cards, and postal mail to identify a particular product number, person, or location. The code 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. |
| A barcode reader is used to read the code. 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. Bar codes and readers are most often seen in supermarkets and retail stores, but a large number of different uses have been found for them. They are also used to take inventory in retail stores; check out books from a library; track manufacturing and shipping movement; sign in on a job; identify hospital patients; and tabulate the results of direct mail marketing returns. Very small bar codes have been used to tag honey bees used in research. Readers may be attached to a computer (as they often are in retail store settings) or separate and portable, in which case they store the data they read until it can be fed into a computer. | A barcode reader is used to read the code. 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. Bar codes and readers are most often seen in supermarkets and retail stores, but a large number of different uses have been found for them. They are also used to take inventory in retail stores; check out books from a library; track manufacturing and shipping movement; sign in on a job; identify hospital patients; and tabulate the results of direct mail marketing returns. Very small bar codes have been used to tag honey bees used in research. Readers may be attached to a computer (as they often are in retail store settings) or separate and portable, in which case they store the data they read until it can be fed into a computer. | ||
dido/public/ra/xapend/xapend.a_glossary/b/barcode.1626914485.txt.gz · Last modified: 2021/07/21 20:41 by nick
