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EAN-139780717256099   EAN-13 barcode 9780717256099
Product NameThe Usborne Book Of Science Activities, Vol. 2
LanguageEnglish
CategoryBook / Magazine / Publication
Short DescriptionHardcover
Amazon.comA Buy on Amazon ~ 074600978X
Price New5.71 US Dollars    (curriencies)
Price Used0.25 US Dollars    (curriencies)
Width8.51 inches    (convert)
Height0.43 inches    (convert)
Length8.54 inches    (convert)
Weight1.6 ounces    (convert)
AuthorHelen Edom, M. Unwin
Page Count72
BindingHardcover
Published01/01/1993
Long Description-- Basic scientific principles are explained with the aid of fun experiments and activities-- All experiments use everyday household equipment-- Simple text and illustrations enable children to use the books by themselves
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Created04-11-2012 1:05:00am
Modified05-09-2017 3:02:00pm
MD51827fa28cb56e389e96ac7b8de6b9ba7
SHA256d687082792dcb12340e9e880eb025b1b2e193f98bb82a9c807fe5cee670591c1
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Article of interest

Identified by the bulls-eye pattern in the center of the square, the Aztec Code barcode is easy to recognize. This symbol supports patterns ranging from 15x15 up to 151x151 blocks with one special rune that can encode a single byte. This rune is 11x11 blocks.

Barcode Aztec

The bulls-eye is either 9x9 or 13x13. The ring directly beyond the bulls-eye is the mode section. The remainder of the symbol is the data and error correction. Three of the corners of the core hold the orientation markers. In the image below we have marked the bulls-eye in red, the mode section in green and the orientation markers are in blue leaving the data area in black and white.

Barcode Aztec

The data is stored in pairs of rings that stretch out from the core. The decoding of data starts at the orientation marker made up of three blocks and procedes in a counter-clockwise direction. There is no outer marker to identify the outer boundry because the size is encoded in the core.

Because this symbology is mainly used in industry and not for public consumption, most smart phones can't read them. Try with your smart phone.

Although we don't have a generator here on our site at the moment, there is one availbale at www.racoindustries.com if you wish to create your own Aztec Code barcodes.

 

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