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EAN-139780764146145   EAN-13 barcode 9780764146145
Product NameBarron's Sat Subject Test: Biology E/M, 3rd Edition
LanguageEnglish
CategoryBook / Magazine / Publication
Short DescriptionHeight:10.87 inches / Length:8.39 inches / Weight:1.4 pounds / Width:0.91 inches
Amazon.comA Buy on Amazon ~ 0764146149
SKUNU-ING-00789760
Price New1.99 US Dollars    (curriencies)
Price Used1.29 US Dollars    (curriencies)
Width8.4 inches    (convert)
Height0.9 inches    (convert)
Length10.8 inches    (convert)
Weight22.4 ounces    (convert)
AuthorDeborah T. Goldberg M.S.
Page Count408
BindingPaperback
Published08/01/2011
FeaturesUsed Book in Good Condition
Long DescriptionThis updated edition prepares students to succeed on the SAT Subject Test in Biology E/M (Ecology and Molecular). The manual presents a short diagnostic test and two full-length Biology E/M practice tests that reflect the actual test in format and degree of difficulty. Practice tests come with all questions answered and explained. The book also includes a test overview and an extensive subject review of all topics covered on the exam.
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SHA256c153d700cbeba4ffb8c7076b01ae317339a50e220445ad085353132b9176b48c
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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.

Character Stripe Bits Binary Value
START 110 1
0 100100100100 0000
1 100100100110 0001
2 100100110100 0010
3 100100110110 0011
4 100110100100 0100
5 100110100110 0101
6 100110110100 0110
7 100110110110 0111
8  110100100100 1000
9  110100100110 1001
STOP 1001 0 + extra stripe

 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.

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