论文部分内容阅读
条码技术最早出现在20世纪40年代。当时美国两位工程师研究用条码表示信息,并于1949年获得世界上第一个条码专利。这种最早的条码由几个黑色和白色的同心圆组成,被形象地叫做牛眼式条码。这个条码与我们现在广泛应用的一维条码在原理上一致,它们都是用深色的条和浅色的空来表示
Bar code technology first appeared in the 1940s. At that time, two engineers from the United States studied the use of bar codes to represent information and obtained the world’s first bar code patent in 1949. This earliest bar code consists of several black and white concentric circles, is vividly called bull’s eye bar code. This barcode is in principle the same as the one-dimensional barcode that we nowadays use, all of which are represented by dark bars and light-colored spaces