zero suppression การใช้

• Through a technique called " zero suppression, " 0s are omitted but in such a way the machine can determine where they would fall in the underlying 12-digit code.
• Note : the equivalent UPC small format barcode, UPC-E, encodes a GTIN-12 with a special Company Prefix that allows for " zero suppression " of 4 zeros in the GTIN-12.