条码是表示特定信息、专供机器识读的一种特殊符号。在所有发达国家和许多发展中国家,条码被广泛地用作商品标志,大大促进了这些国家的经济发展,尤其在推动对外贸易方面,条码发挥了重要作用。条码作为向电子计算机输入数据的一种特殊代码,以其准确度高、输入速度快、制作容易、设备经济实用的优越性,成为商品能够流通于国际市 A bar code is a special type of symbol that indicates specific information and is intended for machine-readable use. Bar codes are widely used as a symbol of goods in all developed countries and many developing countries, greatly contributing to the economic development of these countries. Bar codes have played an important role especially in promoting foreign trade. As a special code for inputting data into electronic computer, bar code has the advantages of high accuracy, high input speed, easy manufacture and economic and practical advantages of the device, making it possible for commodities to circulate in the international market