UPC-A - Barcode SDK / ActiveX Plug-In for Imaging Toolkits
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UPC-A

UPC-A encodes 12 numeric digits. The first digit identifies the numbering system being used:

• 0: regular UPC codes
• 1: reserved
• 2: random weight items marked at the store
• 3: National Drug Code and National Health Related Items code
• 4: no format restrictions, for in-store use on non-food items
• 5: for use on coupons
• 6: reserved
• 7: regular UPC codes
• 8: reserved
• 9: reserved

The next group of 5 digits identifies the manufacturer. This number is assigned by the Uniform Code Council (UCC). The next 5 digits identify the particular product and are assigned by the manufacturer. The last digit is a Modulo 10 checksum.

Uses:

UPC-A is used for marking products which are sold at retail in the USA.