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EAN-139780794515492   EAN-13 barcode 9780794515492
Product NameSee Inside Science
CategoryBook / Magazine / Publication
Short DescriptionBoard Book
Amazon.comA Buy on Amazon ~ 0794515495
Price New12.99 US Dollars    (curriencies)
Price Used6.70 US Dollars    (curriencies)
Width8.5 inches    (convert)
Height10.75 inches    (convert)
Length0.75 inches    (convert)
Weight26.72 ounces    (convert)
AuthorAlex Frith, Colin King
Page Count16
FeaturesSee Inside Science [Board Book]
Long DescriptionThe Usborne Flap Book See Inside Science has over 50 flaps to discover and lift, and asks some intriguing questions. How are plants and animals related? What is the universe made of? And just what is the big secret behind it all? Scientists have been exploring these mysteries and any others for thousands of years, and this book is packed with flaps that reveal the amazing things they have discovered.
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Created02-26-2012 6:38:13pm
Modified09-26-2017 1:42:32pm
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Article of interest

This symbology was developed by the Plessey Company in England. A variation of Plessey was used by the ADS Company and is known as Anker Code. Anker Code was used in European point of sale systems prior to the advent of EAN. Another variation is known as the MSI Code.

Plessey offers a full range of HEX digits 0-F. The bit pattern of the bits sets the high order bit at the right which is reverse of how we normally think of bits these days. (MSI puts the high order bit on the left).

The start bar is always "D" (1101) and the terminator can be two binary 1's (11) if the barcode is to be read from left to right only. If the barcode can be read in either direction the terminator will be a single binary 1 (1) and is followed by a reverse of the start character or the "B" (1011).

Digit Strip Bits Binary Value
0 100100100100 0000
1 110100100100 1000
2 100110100100 0100
3 110110100100 1100
4 100100110100 0010
5 110100110100 1010
6 100110110100 0110
7 110110110100 1110
8 100100100110 0001
9 110100100110 1001
A 100110100110 0101
B 110110100110 1101
C 100100110110 0011
D 110100110110 1011
E 100110110110 0111
F 110110110110 1111
START 110110100110 1101
STOP > 110110 11
STOP < > 110110100110110 11011

You can use the stripe bits can be used to generate the graphic pattern. If you want to see this trick, check out the MSI Code page. Plessey uses a cyclic (or polynomial) check code technique which is applied to the reading of barcode labels and transmission of data. This technique is a fair compromise between the extra redundancy and the error detecting power. Roughly one undetected error per hundred million 6 digit transactions.

If you would like to generate your own Plessey Barcode, please visit our free barcode generator page. Make your code, save it and use it how ever you like.