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barcode generation principle : bar code data of the first part by the seven figu...

于 2022-01-25 发布 文件大小:68.44 kB
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条形码的生成原理: 条形码的第一数据部分是由 7个数字形成的,其形成的方法详述如下: n 首先使用 产生和 匹配的字母码,该字母码有6个字母组成,字母限于A和B。产生字母码的列表如下 字母码 0 AAA 1 AABABB 2 AABBAB 3 AABBBA 4 ABAABB 5 ABBAAB 6 ABBBAA 7 ABABAB 8 ABABBA 9 ABBABA 表一 映射表 n 将 和 产生的字母码按位进行搭配,来产生一个数字-字母匹配对。并通过查表来得到 形成的条形码第一数据部分。 将 和C进行搭配,并通过查表得到 形成的条形码的第二数据部分。 该映射表如表二所示: 数字-字母匹配对 二进制信息 0A 0001101 0B 0100111 0C 1110010 1A 0011001 1B 0110011 1C 1100110 2A 0010011 2B 0011011 2C 1101100 3A 0111101 3B 0100001 3C 1000010 4A 0100011 4B 0011101 4C 1011100 5A 0110001 5B 0111001 5C 1001110 6A 0101111 6B 0000101 6C 1010000 7A 0111011 7B 0010001 7C 1000100 8A 0110111 8B 0001001 8C 1001000 9A 0001011 9B 0010111 9C 1110100 表二 数字-字母映射表 n 绘制条形码:通过映射表二得到的二进制数码进行绘制,1对应黑线,0对应白线。 -barcode generation principle : bar code data of the first part by the seven figures formed, and the formation of detailed as follows : n the first use of the alphabet and matching code, the code l

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