EAN code
The EAN code is a bar code for commodities formulated by the International Article Coding Association, which is commonly used all over the world. There are two types of EAN code symbols: the standard version (EAN-13) and the shortened version (EAN-8). Our country's general commodity barcode is equivalent to it. The bar codes printed on the packaging of our daily purchases are generally EAN codes.
UPC code
The UPC code is a bar code for commodities formulated by the United States Unified Code Commission, which is mainly used in the United States and Canada. We can see it on the goods imported from the United States.
39 yards
Code 39 is a bar code that can represent information such as numbers and letters. It is mainly used for the automatic management of industry, books, and tickets. It is currently widely used.
Codebar code
The Kudba code can also represent digital and letter information, and is mainly used for automatic identification in the fields of medical and health care, library and information, and materials. QR code:
One-dimensional bar codes carry a limited amount of information. For example, bar codes on commodities can only accommodate 13 digits (EAN-13 code) Arabic numerals. More information can only rely on the support of the commodity database, leaving the pre-established database. Bar codes are meaningless, so the application range of bar codes is also limited to a certain extent. For this reason, two-dimensional barcodes were invented in the 1990s. In addition to the advantages of the one-dimensional barcode, the two-dimensional barcode also has the advantages of large amount of information, high reliability, confidentiality and strong anti-counterfeiting.
At present, two-dimensional barcodes mainly include PDF417 code, Code49 code, Code 16K code, Data Matrix code, MaxiCode code, etc., which are mainly divided into two categories: stacked or layered and checkerboard or matrix.
As a new information storage and transmission technology, two-dimensional bar code has received extensive attention from the international community since its birth. After several years of hard work, it has been applied in many fields such as national defense, public safety, transportation, medical care, industry, commerce, finance, customs and government management.
Relying on its huge information carrying capacity, 2D barcodes can include the information stored in the background database when using 1D barcodes in the past. You can get the corresponding information directly by reading the barcode, and the 2D barcode has error correction technology And anti-counterfeiting function, increase the security of data.
The two-dimensional barcode can compile photos and fingerprints in it, which can effectively solve the problem of machine-readable and anti-counterfeiting of documents. Therefore, it can be widely used in passports, ID cards, driving permits, military IDs, health certificates, insurance cards, etc.
PDF417 technology has been used for driving licenses, US military licenses, and military medical licenses in more than a dozen states such as Arizona. Compiling the personal information and photos on the certificate in a two-dimensional barcode can not only realize the automatic identification of the ID card, but also effectively prevent the occurrence of counterfeit documents. Many countries such as the Philippines, Egypt, and Bahrain have also adopted two-dimensional barcodes on their ID cards or driver ’s licenses, and two-dimensional barcode technology has also been adopted on the passports of Hong Kong SAR in China.
In addition, there are examples of using two-dimensional bar code technology to solve data entry and prevent forgery and deletion of forms on customs declaration forms, long-distance freight orders, tax reports, and insurance registration forms.
In some areas of China's certified public accountant certificate and automobile sales and after-sales service, two-dimensional barcodes have also been initially applied.
Pump Water,Aquarium Water Pump,Submersible Water Pump,Electric Water Pump
HENGYUE INDUSTRIAL CO.,LTD , https://www.hetoaquarium.com