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什么是二维码二维码,又称二维条码,二维条形码最早发明于日本,它是用某种特定的几何图形按一定规律在平面(二维方向上)分布的黑白相间的图形记录数据符号信息的,在代码编制上巧妙地利用构成计算机内部逻辑基础的“0”、“1”比特流的概念,使用若干个与二进制相对应的几何形体来表示文字数值信息,通过图象输入设备或光电扫描设备自动识读以实现信息自动处理它具有条码技术的一些共性:每种码制有其特定的字符集;每个字符占有一定的宽度;具有一定的校验功能等同时还具有对不同行的信息自动识别功能、及处理图形旋转变化等特点。
What is the two-dimensional code QR code, also known as two-dimensional bar code, two-dimensional bar code was first invented in Japan, it is a specific geometry by a certain law in the plane (two-dimensional direction) distribution of black and white graphics Data symbolic information, the concept of “0 ” “1 ” bit stream that makes up the internal logic of computer is skilfully utilized in the coding of the code, the numerical value information is represented by using a number of geometric forms corresponding to the binary, Automatically read through the image input device or photoelectric scanning device to achieve automatic information processing It has some common bar code technology: each code system has its own specific character set; each character occupies a certain width; with a certain verification function At the same time, it also has the function of automatically recognizing the information of different lines and dealing with the change of graphics rotation.