General Commodity code UPC bar code related knowledge introduction

The UPC barcode originated from a company called the Uniform Coding Council (UCC). This barcode type is mainly used in the United States and Canada, and can be found on the packaging of goods in the United States in import stores.

UPC bar codes can only be used to identify digits, so the code set is digits 0-9. Every seven modules express a character, and each module has two states: empty (white) and bar (black). The last bit of UPC bar code is the check bit. When making UPC-A bar code in the bar code label printing software, only 11 bits of data need to be input. The last 1 bit check bit software will be automatically generated, and there is no need to calculate separately, so the operation is very convenient.

UPC bar codes are classified into five versions: UPC-A, B, C, D, and E. Among them, the most common UPC barcode is UPC-A, which is also the most widely applicable and standard version of the UPC barcode.

UPC barcode Version Application Category:

Upc-a bar code type is generally used for commodities. This bar code type is most widely used in UPC bar codes. The bar code is A fixed-length code and can only represent 12 digits.

Upc-b bar code type is mainly used in medical and health care;

Upc-c barcode type is mainly applied to industrial departments. The second place in barcode data is the system, and the penultimate second is the check code.

Upc-d bar code type is mainly used in warehouse wholesale. The third from last in the bar code data is the check code.

Upc-e bar codes are short codes of products. The total length is 8 character codes.