The definition of data chip and barcode label is a graphic identifier that arranges several black bars and blanks with different widths according to certain coding rules to represent a group of information. Digital chip, that is, digital integrated circuit, is a digital logic circuit or system that integrates electronic components and wires on a semiconductor chip. It is designed and operated based on digital logic (Boolean algebra) and is usually used to deal with digital signals and other problems. Through the query of relevant information, bar codes can indicate the country of production, manufacturer, commodity name, production date, book classification number, starting and ending place, category, date and many other information, so they have been widely used in many fields such as commodity circulation, book management, postal management, banking system and so on.