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Bc c128 hd wide font letters4/8/2023 ![]() The specification of a symbology includes the encoding of the single digits/characters of the data as well as the start and stop markers into bars and space, the size of the quiet zone required before and after the barcode, as well as the computation of a checksum.Ĭode 128, Code 39, Codebar, EAN-13, EAN-8, Interleaved 2 of 5, UPC-A, MSI, PDF-417, Pleassey, etc.īarcodes can be read by special optical scanners called barcode readers, and also by applications that can read images for devices such as smartphones with cameras, etc. Matrix or two-dimensional (2D) barcodes use rectangles, dots, hexagons and other geometric patterns in two dimensions to represent the data.Īnd the mapping between data and barcode graphics is called a symbology. ![]() ![]() These are so called linear or one-dimensional (1D) barcodes. Different kinds of labels such as product and shelf labels, packaging and shipping labels, etc.īarcodes represent some data (Item ID, Expiration date, etc.) in the form graphic images containing parallel lines (bars) of varying widths and spacings between the bars. ![]()
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