In my experience, the communications major opens the doors to creativity in a way that many other majors simply do not. On the other hand, what is required of communications majors in order to get ahead does not appear any different from what is required of those who are majoring in other fields:
A GTIN is a numeric data structure containing 8 digits, 12 digits, 13. digits, or 14-digits. It is recommended that GTINs are represented in software. applications as 14-digits by right justifying and zero filling left, as appropriate. The term trade item refers to any product or service upon which there is a need.
UPC to DataBar POS Barcode Comparison. The following is a comparison of a UPC-A barcode encoding the GTIN-12 data 123456789012 with DataBar barcodes encoding the same data for use in POS systems. The GTIN-12 is converted to GTIN-14 by adding zeros to the beginning of the number.