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Introduction of Barcode Scanner & Barcode Technology |
| Introduction Without fanfare, barcodes have become an important part of our lives. They have crept into business as diverse as automobile factories and corner grocery stores. Barcode is the unsung hero of many computer-based business systems. Barcodes and automatic identification systems (AutoID) are the most cost-effective asset management and resource allocation. In an age of steadily declining productivity, companies that have adopted barcode based management system have quickly seen a reversal of this trend. A barcode is a self-contained message with information encoded in the width of bars and spaces in a printed pattern. Since barcodes are used with computers, binary code is used. Essentially, the black bars and white spaces represent ones and zeros - the language computer understand. In their simplest form, barcodes are read by sweeping a small spot of light across the printed barcode symbol by a barcode scanner. The sweep starts at the white space before the first bar, continues past the last bar and ends in the white space which follows the last bar. Because a barcode cannot be read if the sweep wanders outside the symbol area, bar heights are chosen to make it easy to keep the sweep within the bar code area. The longer the information toe be coded, the longer the barcode. As the length increases, the height of bars must be increased to allow for more wandering during reading. For more information about barcode scanner, please refer to the following links:
1. Most Common Barcode Symbologies
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