Archive for the ‘Barcodes’ Category
The secret Barcode Check Digit – how it’s calculated
Most people know that the last digit of a barcode is a “check digit” used by the scanner to check whether it read the barcode correctly. It does this by adding up and multiplying the numbers it gets from the bars. The secret formula for the last digit is:
Barcodes
A barcode, or UPC code, is essential if you’re planning to sell your CDs in stores or online.