One-dimensional code: One-dimensional code consists of vertical black bars and white bars, alternating with black and white, with stripes of different thicknesses. Usually, there are English letters or Arabic numerals under the stripes.
Two-dimensional code: The two-dimensional code is usually a square structure, which is not only composed of horizontal and vertical bar codes, but also has polygonal patterns in the code area. Similarly, the texture of the QR code is black and white, and the QR code is in the form of a dot matrix!
One-dimensional code two-dimensional code
Function:
One-dimensional code: can identify the basic information of goods, such as the name and price of goods, but can not provide more detailed information of goods. To call more information, we need the further cooperation of computer database.
Two-dimensional code: not only has a unique identification function, but also can display more detailed product content. For example, clothes can not only show the name and price of clothes, but also show what materials are used, the percentage of each material, the size of clothes, what size people are suitable for wearing, and some washing precautions. , without the cooperation of computer database, simple and convenient.
merits and demerits
One-dimensional code: mature technology, wide application, less information, only support English or numbers, low equipment cost, and need to be combined with computer database.
Two-dimensional code: lattice graphics, high information density, large amount of data, strong error correction ability, coding patent, payment. The two-dimensional code cannot be changed after it is generated, and the security is high. It supports multiple languages, including English, Chinese and numbers.