Image
EAN-139780749681821   EAN-13 barcode 9780749681821
Product NameWater (What Happens When We Recycle)
LanguageEnglish
CategoryBook / Magazine / Publication
Short DescriptionHardcover
Amazon.comA Buy on Amazon ~ 0749681829
SKU1855577
Price New439.27 US Dollars    (curriencies)
Price Used52.67 US Dollars    (curriencies)
Width10.79 inches    (convert)
Height0.39 inches    (convert)
Length8.58 inches    (convert)
Weight79 hundredths pounds    (convert)
AuthorJillian Powell
Page Count32
BindingHardcover
Published01/15/2009
Long DescriptionThis is one in a series of books which take us on the journey a material takes when it is recycled, tracing its step-by-step route from when we finish with it, through the recycling process, to the new, recycled product
Created11-21-2012 10:07:38pm
Modified09-09-2018 9:46:18am
MD58efda9d5c1fa7f05002a41be9eb804b1
SHA25622f13197e0c80a45a29351e18d196ecb1825d39a0d034a57a6166a667babe562
Search Googleby EAN or by Title
Query Time0.0055199

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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