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EAN-139780753414125   EAN-13 barcode 9780753414125
Product NameEverything You Need To Know: An Encyclopedia For Enquiring Young Minds
LanguageEnglish
CategoryBook / Magazine / Publication
Short DescriptionHardcover
Amazon.comA Buy on Amazon ~ 0753414120
SKUG0753414120I3N00
Price Used0.88 US Dollars    (curriencies)
AuthorDeborah Chancellor
Page Count320
BindingHardcover
Published10/01/2007
Created11-16-2012 7:24:50am
Modified01-10-2014 8:54:19pm
MD5498225d6f25cc84281d6e1b002abc684
SHA2563ccff3814657e3ef12f4e0c930fbfc42e574c105707a4ff88503d46a9429d360
Search Googleby EAN or by Title
Query Time0.0052242

A Data Matrix code is a two-dimensional barcode make up of blocks of black and white modules put together to make either a square or rectangular pattern. The information to be encoded can be text or raw data.

Normally, data size is from a few bytes up to 1,556 bytes. The length of the data depends on the symbol dimension used. To make sure the data can be read even when the pattern is slightly damaged, error correction codes are added which increase symbol strength. A Data Matrix symbol can store up to 2,335 alphanumeric characters. Here is a sample you can scan.

Barcode Data Matrix

Data Matrix symbols are rectangular in shape and usually square. As more data is added, modules are put together to allow for the data and error correction. Each module can be identified by the "L" shaped black line that runs down the left and across the bottom of each module. In the sample shown above, there are four modules. These "L" shaped sections are known as the "finder pattern". The top and right border of each module are made up of alternating light and dark blocks. Light blocks represent 0 (zero) and the dark blocks represent 1 (one). These are known as the "timing pattern". All of the blocks in the middle of each module make up the data and check codes. The entire pattern can range in size from 8x8 to 144x144 in size.

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