Photosensors that can read barcode scanner barcode and convert them into electrical signals from each bar is equivalent to the character of the software. Bar codes can easily be converted to electrical signals, these are the messages that can be displayed on the screen, this process is a real fast and takes only a few milliseconds. Today, there are many varieties of pattern scanning barcodes to their applications depend a lot on the type of industry and work environment are examples of portable and desktop format portable. One of the most popular types of barcode scanners, wireless, they connect to the base station or wireless workstations and can send the data back to the station as long as they are within wireless range.

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