![]() In this example, the barcode reader, which must be in Full ASCII mode, decodes the plus sign, and then, rather than transmitting it, scans the next barcode character symbol (in this case, a capital "A") and performs a Full ASCII conversion to then transmit the lowercase "a". So, to print the letter "a", you would create a barcode that uses "+A". In other words, you can encode any of the ASCII standard (not extended) characters and the ASCII control characters into a barcode, as illustrated in the following table from the ISO/IEC standard.įor example, to create lowercase letters, you use the barcode symbol for a plus sign (+) followed immediately by the barcode symbol for the uppercase version of the letter. 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 '7' is the check digit and its computation is illustrated in the section below.The symbol comprises the following elements: To encode the data 'abcde' with the check digit manually, simply key in '*+A+B+C+D+E7*' and select the FontCode39H3.ttf font. To encode the data 'abcd' without the check digit manually, simply key in '*+A+B+C+D*' and select the FontCode39H3.ttf font. The extendedcharacters are shown on the second table.Īll Extended characters are made up of multiple Code39 characters.īarcode 39 Font Excel Extended Characters The basic characters are the same as Code39 barcode. Using this Barcode ManuallyThe following table lists the characters supported by the Code39 Extended barcode. The fonts are the same as those in Code 39. The following is the list of fonts with varying heights supported by Aeromium for Code 39 Extended. ![]()
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