To figure out the difference between the two, first of all, we need to have a simple understanding of the barcode. The one-dimensional bar code is composed of vertical black bars and white bars, black and white, and the thickness of the stripes is different. Usually, there are English letters or Arabic numerals under the stripes. The one-dimensional bar code can identify the basic information of the product, such as the product name and price. Etc., but can not provide more detailed information on the goods, to call more information, need further cooperation with the computer database. Therefore, the one-dimensional barcode scanner at this time can only scan one-dimensional barcodes.
With the development of the social economy and the advancement of the information age, one-dimensional bar codes can no longer meet people's needs, so two-dimensional bar codes appear. It is usually a square structure, not only consists of horizontal and vertical bar codes, but also has a polygonal pattern in the code area. Similarly, the two-dimensional code texture is also black and white, different in thickness and in a lattice form.