EAN-130000001197921   EAN-13 barcode 0000001197921
UPC-A000001197921   UPC-A barcode 000001197921
Product NameTx Hlth Baby Bundle
CategoryElectronics / Photography: A/V Media: Music
Short DescriptionEach
Amazon.comA Buy on Amazon ~ B0002QOGFM
Created07-01-2006
Modified06-29-2020 4:05:53am
MD5e889c09bf38287c564b63a275d0e9407
SHA256299c07b7ef2f27d1e5874a5cdd8eb35b8e45db416da819f88e553277a54393f6
Search Googleby EAN or by Title
Query Time0.0238919

Article of interest

Code 128 is a high-density 1D barcode symbology. This barcode set makes use of the entire 128 ASCII characters which include letter, number and symbols.

Code 128 Barcode

As with all barcodes, there are indicators to identify where the barcode starts and stops. These are marked in yellow below. Code 128 also has a check character which has been marked in green. The remainder of the barcode is the data being encoded. The text below the barcode is optional and is for human consumption in the event the barcode can't be scanned or if people also need to know what the code means.

Code 128 Barcode

Each character in the barcode symbol is composed of three bars and three spaces. Each bar or space must range from 1-4 units and the sum of all the width of all bars must work out to an even number. The stop marker is special because it adds an extra bar of 2 units at the very end (4 bars and 3 spaces). There are three different start markers to to identify which code set is being used. To represent all 128 characters, the code sets can be within a single barcode as needed by using control characters 98-101 (depending on the code set).

The check character is calculated by summing the value of each character and multiplying it by its position. The start character is also part of the sum but is added without weight (multiply by 1 just like the first encoded data character) then when you have the sum take the modulo 103 remainder. This gets a little more complex when mixing modes within a single barcode.

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