Within each code set, some of the 103 data code points are reserved for shifting to one of the other two code sets. The initial subset is selected by using the appropriate start symbol. Code set C is used to efficiently encode digit strings. Together, code sets A and B cover all 128 ASCII characters. To represent all 128 ASCII values, it shifts among three code sets (A, B, C). A scanner seeing the reverse stop symbol then knows it must skip the 2-module bar and read the rest of the barcode in reverse.ĭespite its name, Code 128 does not have 128 distinct symbols, so it cannot represent 128 code points directly. When the stop pattern is read right-to-left, the reverse stop symbol (followed by a 2-module bar) is recognized. When the stop pattern is read left-to-right (the usual case), the stop symbol (followed by a 2-module bar) is recognized. The stop pattern permits bidirectional scanning. The stop pattern is composed of two overlapped symbols and has four bars. Each bar and space is 1 to 4 modules wide, and the symbols are fixed width: the sum of the widths of the three black bars and three white bars is 11 modules. All widths are multiples of a basic "module". Each symbol consists of three black bars and three white spaces of varying widths. ![]() The check symbol is calculated from a weighted sum ( modulo 103) of all the symbols.Ĭode 128 includes 108 symbols: 103 data symbols, 3 start symbols, and 2 stop symbols. Final bar (often considered part of the stop symbol).You can also generate many other barcode symbologies. The code is publicly available and free to use. Codes are ideal for government applications like driver's licenses because they can store photos, fingerprints, signatures, text, numbers, and graphics. PDF417 - These codes can store huge amounts of data up to 1.1KB. ![]() ![]() Codes have the advantage of being very robust and fast to read. QR codes are free and publicly available.ĭataMatrix Code - Popular for logistics and operations, these two-dimensional codes are tiny in size and are ideal for labeling small items such as electronic components. QR codes support numeric, alphanumeric, byte / binary codes and hieroglyphs. QR codes are two-dimensional matrix codes intended for consumers and marketing. QR code is one of the most common 2D codes. Code 128 barcodes for use in the internal supply chain can store a variety of information. ![]() Code 128 encodes both numeric and alphanumeric text. Code 39 is the simplest of the alphanumeric codes, it is designed to self-test characters and is often used internally by small businesses.Ĭode 128 is used in transport and logistics, Code 128 is a high density ordering and distribution code. Code 39, as the name suggests, can contain up to 39 characters in a barcode. There are also options such as ISBN and ISSN for more specific applications.Ĭode 39 - used in defense and automotive. The code differs from the UPC code in that the additional first digit identifies the country of origin code. The code consists of 12 numbers, and encodes a country code, company code, and product code.ĮAN is the European equivalent of UPC codes. You can found this barcode on any product. UPC is a 12-digit one-dimensional barcode used primarily in the United States for retail and consumer products. There are many different barcode symbologies for different applications. Aspose.Total Product Solution Aspose.Words Product Solution Aspose.PDF Product Solution Aspose.Cells Product Solution Aspose.Email Product Solution Aspose.Slides Product Solution Aspose.Imaging Product Solution Aspose.BarCode Product Solution Aspose.Diagram Product Solution Aspose.Tasks Product Solution Aspose.OCR Product Solution Aspose.Note Product Solution Aspose.CAD Product Solution Aspose.3D Product Solution Aspose.HTML Product Solution Aspose.GIS Product Solution Aspose.ZIP Product Solution Aspose.Page Product Solution Aspose.PSD Product Solution Aspose.OMR Product Solution Aspose.SVG Product Solution Aspose.Finance Product Solution Aspose.Font Product Solution Aspose.TeX Product Solution Aspose.PUB Product Solution Aspose.Drawing Product Solution Aspose.Audio Product Solution Aspose.Video Product Solution Aspose.eBook Product Solution
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