Choosing a Barcode Symbology. Code 3 of 9 Full ASCII (Also called Code 39) This barcode can be used to store any of the 128 Full ASCII alphanumeric characters, including upper and lower case letters A-Z, numbers 0-9, and punctuation. Code 3 of 9 Standard (Also called Code 39) Code 39 Standard is the most commonly used barcode. Use Code 39 to store any of the 43 standard alphanumeric characters …
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