News — symbologies

ASCII Character Set

Posted by Tom Graham on

ASCII (American Standard Code for Information Interchange) is a character-encoding scheme used to convert human readable characters into a code that a computer can understand. The complete ASCII Character Set includes 0-255 unique characters - 256 in total. Certain symbologies can encode the completed ASCII set (256 characters)... ...while others can encode only a subset of the ASCII set.

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Barcode Symbology

Posted by Tom Graham on

To understand ADC technology you have to understand what symbology is. Symbology is a method of representing data characters using barcodes. We distinguish different types of symbologies and each symbology has a unique way of encoding data characters. To read barcodes we use scanners. Two main symbology types are 1D and 2D. 1D Barcode Symbology Example Code 3 of 9 Each data character is represented by 9 elements - wide (W) and narrow (N) bars and spaces 3 out of 9 characters must be wide   2D Barcode Symbology Example PDF417 PDF417 is 2D symbology is where data is encoded...

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