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Why barcode labels used
Release time:2013-05-22      Source:admin      Reads:
　Barcode labels are constitute by bar codes, they are the most popular of the automatic data entry methods. It is a pattern of parallel bars and spaces of variable widths arranged in a specific predetermined pattern to represent a corresponding number, letter, or symbol. The information in a bar code is contained in the relative thickness and relative position of the lines and spaces within the specific data characters. Scanners convert the bars and spaces into usable information for data entry. 　Bar codes streamline data entry. They are used to increase the speed and accuracy of reading and entering data. It is primarily intended as a machine-readable data management system. Bar codes have received wide spread acceptance because of their low susceptibility to errors in data input. The error rate in human reading of hand written data is 7-14%. The error rate in human reading of preprinted data is 1/300 characters. There is a one in two million error rate for scanner read bar codes. It is considered the most effective data entry method. Most new bar code installations have a payback of less than one year. Credited with accuracy, speed, control, reliability and portability, bar code technology is the most popular method of tracking and transmitting data and is replacing other methods of tracking and transmitting data. That is why barcode labels can be used in widely field. 　Also barcode labels divided in to many kinds because there are over 50 different bar code symbologies each having their own symbol interpretation. Currently, there are only a few code symbologies in wide spread use. Code symbol density ranges from low to mega-density. Low-density symbols have fewer than 3 characters per inch. High-density symbols can contain 100s of characters per square inch. Code symbologies are classified as linear or two-dimensional. Two types of symbology structure, discrete or continuous, define all bar codes.
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