Barcode scanners can be divided into three parts. They have a decoder, an illumination system, and a sensor. These scanners scan the white elements of the barcode by using a red light, which is then transformed into matching text.
Basically, the sensor inside of the barcode scanner is able to detect the light reflected by the illumination system. This is used to create an analog signal that is then transmitted to the decoder. When the decoder receives a signal, it will interpret it and then validate the barcode. This is done via the check digit. From there, this is converted into text.
Once the text is converted, it is transferred from the scanner to a computer software system. The software system has a database that is able to take the information gathered by the scanner and then link it to products being sold. At grocery stores, for example, workers simply scan a barcode and know the quality, cost, and maker of the products that are being sold.
You can find different barcode scanners to meet your needs. They have diverse capabilities and ranges. Some scanners are designed specifically for certain industries because of their reading distance and due to their work volume capacity. Some companies have been able to use their smartphones as makeshift barcode readers, but they usually lack some of the capabilities that dedicated barcode readers offer.
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