Barcode FAQ Index:
Barcode Implementation Tutorials:
Some barcode types, or symbologies, encode only numbers while others encode letters and numbers. Other barcode types can actually encode files, pictures and other binary data. Here is a basic breakdown of a few barcode types and what they encode:
|Barcode symbology||Types of data encoded|
|Code 39||Numbers and upper case letters with a few symbols|
|Code 128||All numbers, letters and punctuation plus ASCII 0 to 127|
|Data Matrix||All numbers, letters and punctuation, ASCII 0 to 127 plus files and bytes.|
|Interleaved 2 of 5||Numbers only|
|MSI Code||Numbers only|
|PDF417||All numbers, letters and punctuation, ASCII 0 to 127 plus files and bytes.|
If the intended use of the barcode fonts is for printing, check the type of data to encode:
If the intended use is a barcode component or label printing application, check the type of data to encode:
In a study at Ohio University, several different bar code symbologies were tested to determine their accuracy and are listed below. Keep in mind that a well-trained data entry operator will usually make a data entry error once every 300 keystrokes. Therefore, even implementing the least accurate symbology is a huge step forward to increase production and reduce data entry errors. The most inaccurate symbology (UPC) is used in the retail industry.
|Barcode Type||Worst Case Accuracy||Best Case Accuracy|
|Data Matrix||1 error in 10.5 million||1 error in 612.9 million|
|PDF417||1 error in 10.5 million||1 error in 612.4 million|
|Code 128||1 error in 2.8 million||1 error in 37 million|
|Code 39||1 error in 1.7 million||1 error in 4.5 million|
|UPC||1 error in 394 thousand||1 error in 800 thousand|
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