Image
EAN-13	9780747597643
Product Name	Choking Wolf (Urgency Emergency!)
Category	Book / Magazine / Publication
Short Description	Paperback
Amazon.com	Buy on Amazon ~ 0747597642
SKU	238211
Price New	3.95 US Dollars    (curriencies)
Price Used	0.75 US Dollars    (curriencies)
Width	0.2 inches    (convert)
Height	8.35 inches    (convert)
Length	5.71 inches    (convert)
Weight	3.52 ounces    (convert)
Author	Dosh Archer
Page Count	48
Binding	Paperback
Published	06/01/2009
Long Description	A wolf has something stuck in its throat, a little girl in a red coat can't find her grandma and Nurse Percy is run off his feet in this hilarious medical drama. First readers have never been such fun! With bright, colour illustrations on every page, minimal easy-to-read text and brilliantly fast-paced plots, these animal hospital adventure stories will have young readers devouring the pages.
Created	11-17-2012 2:24:19am
Modified	08-21-2015 2:42:44pm
MD5	531903f91bd4b802ddf797b38f01f031
SHA256	cd84993258cb641ed2b95574d0fb12509433dcf9e49e8e10e2e64d69874226e5
Search Google	by EAN or by Title
Query Time	0.0018201

This symbology was developed by the MSI Data Corporation and is based on the Plessey Code symbology. MSI is most often used in warehouses and inventory control.

This is a continuous non-self-checking symbology meaning it has no predetermined length and there is no validation built into the barcode itself. If you want to validate the data stored in the barcode, you would need to use a check digit. Mod 10 is the most common check digit used with MSI but you can also use mod 1010 or mod 1110. It is allowed but generally not a good idea to omit the check digit all together.

There is a start marker which is represented by three binary digits 110 (where 1 is black and 0 is white). There is also a stop marker which is represented by four binary digits 1001. The remaining markers represent the numeric digits 0-9 (no text or special characters) and each digit is represented by twelve binary digits. Below is a table that describes all of the possible markers. The start and stop markers are the main difference between MSI and Plessey. That and the fact that MSI only covers digits 0-9. You can read these stripes as a binary values where 110 is binary 1 and 100 is binary 0. The stop marker simply has an extra bit on the end.

 To create a graphical barcode using this process, you can simply string together a series of 1 and 0 graphic images once you have calculated what your barcode should look like using the table shown above. You can view the source code of this page if you want to see how we created the example shown below.

Code	[start]375[stop]
Bits:	110 100100110110 100110110110 100110100110 1001
Graphic:

This is just an example of one way to perform the graphic encoding. It is often easier to just draw the lines instead of tacking together individual images. If you would like to create free MSI barcodes, please visit our barcode generator page. You can save the images you make and use them as needed.