Bar code technology is an automatic identification technology developed in computer application, which is widely used in business, postal service, book management, warehousing, industrial production process control, transportation, packaging, distribution and other fields. It first appeared in the 1940s, and consists of a set of bars, spaces and their corresponding characters arranged regularly, which is used to indicate the recognition of certain information.
Automatic bar code identification system consists of bar code label, bar code generating equipment, bar code reader and computer. General commodity bar code generally consists of prefix part, manufacturer code, commodity code and check code.
Bar code is an international product symbol. In order to adapt to computer management, some product sales packages are printed with electronically scanned symbol barcodes. This kind of symbol bar code is coded uniformly in all countries, which can let the store manager know the sales trends of goods at any time, simplify the management procedures and save management expenses.
Barcodes in some countries are based on.
1, USA: 000 ~ 019,030 ~ 039,060 ~139.
2. Finland: 640 ~ 649.
3. Germany: 400 ~ 440.
Bulgaria: 380 people.
5. China: 690 ~ 699.