Image
EAN-13	9780746078860
Product Name	The Town Mouse and the Country Mouse: Level 4 (First Reading): Level 4 (First Reading)
Language	English
Category	Book / Magazine / Publication
Short Description	Hardcover
Amazon.com	Buy on Amazon ~ 0746078862
SKU	NU-GRD-03055760
Price New	6.03 US Dollars    (curriencies)
Price Used	1.47 US Dollars    (curriencies)
Width	0.2 inches    (convert)
Height	8.07 inches    (convert)
Length	5.51 inches    (convert)
Weight	44 hundredths pounds    (convert)
Author	Susanna Davidson,Susanna Davidson Jacqueline East
Page Count	48
Binding	Hardcover
Format	Import
Published	04/27/2007
Features	USBORNE PUBLISHING
Long Description	Town Mouse and the Country Mouse
Similar Items	9780698119864: Town Mouse, Country Mouse 9781116865806: Town Mouse, Country Mouse 9780590222976: Town Mouse, Country Mouse 9780794519407: Butterflies: Level Four (Usborne First Reading) 9780794519377: Frogs: Level Three (Usborne First Reading) 9780794513764: Enormous Turnip (First Reading Level 3) 9780794512750: The Dragon Painter (Usborne First Reading Level 4) 9780794512743: The Ugly Duckling (Usborne First Reading Level 4) 9780746070529: The Runaway Pancake: Level 4 (First Reading) 9780554393087: The Dragon Painter (Usborne First Reading Level 4)
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SHA256	8895bfc0452eee75a5b0410c1278c7eb9d80922946e7aa27b03ebd7cc0632b62
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Article of interest

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.