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