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教你识别神奇的UPC条形码

1、Note that barcodes are made up of both black and white lines. The white spaces in between the black lines are part of the code.
1、首先,要注意的是条形码是由黑线和白线组成的。两条黑线间的白线也是编码的一部分。
2、Understand that there are four different thicknesses to the lines. Henceforth, the skinniest line will be referred to as "1," the medium-sized line as "2," the next largest line as "3." and the thickest is "4."
2、要了解线有4种不同的宽度。刚开始看见的最细的线将被看做1;,比最细的大一倍的就是2,再大点是3了,最宽就是4了。
3、Each UPC barcode begins and ends with 101 (thin black, thin white, thin black). In the very middle of the barcode, you will notice two thin black lines sticking down between the numbers. The thin white between them, as well as the thin whites to either side, make up a 01010. Each UPC barcode has 01010 in the middle.
3、每个UPC条形码以101(细黑,细白,细黑)开始并以它结束。在条形码的中间,你会注意到两条细黑线比旁边的线长,分开了数字。两边的白细线和这两黑细线构成了01010。每个UPC编码都有01010在中间。(注:为了防止扫描时出错)
教你识别神奇的UPC条形码
4、Recognize that each digit, including the small numbers that begin and end the barcode, has its own unique four-line set. 0 = 3211, 1 = 2221, 2 = 2122, 3 = 1411, 4 = 1132, 5 = 1231, 6 = 1114, 7 = 1312, 8 = 1213, 9 = 3112. (Note that the sum of bar widths numbers is 7 for all codes because each code is 7 units wide.) 
4、由上图可以注意到每个数字,包括开始和结束都有独有的4线的编码。0=3211,1=2221,2=2122,3=1411,4=1132,5=1231,6=1114,7=1312,8=1213,9=3112。(请注意编码相加和为7,每个编码都是7个单位的宽度)
5、So, the barcode above whose first two digits are 03 would start out "11132111411". Broken down this is "111-3211-1411" Where 111 marks the beginning of the bar code and 3211 marks the digit 0 . 
5、因此,上面的条形码头两个数字将由11132111411开始。用横线分开就是111-3211-1411,其中111标志条形码的开始3211表示数字0。


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