However, Code 39 - Full ASCII uses special two-character combinations from the 43-character set to allow for the representation of all 128 ASCII characters.
The start and stop characters are not transmitted as part of the barcode and are not included in any check digit calculations.Ĭode 39 - Regular and Code 39 - Full ASCII support the same 43-character set and the same start and stop characters. This character is commonly designated as an asterisk, but you can choose to have no start and stop characters at all or choose to let the data source specify either the start character or the stop character or both. Intercharacter spaces (one module wide) that separate characters within the symbolĮach Code 39 - Full ASCII data character is represented by nine elements: five bars and four spaces, three of which are wide and six narrow.Ĭode 39 start and stop characters are used at the beginning and the end of the barcode message to signal a barcode reader that a Code 39 barcode has been scanned. One or more pairs of symbol characters that represent data (including an optional check digit) The symbol comprises the following elements:
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