Image
EAN-139780897472654   EAN-13 barcode 9780897472654
Product NameU.S. Aircraft Carriers in Action, Part 1 (Warships)
LanguageEnglish
CategoryBook / Magazine / Publication
Short DescriptionPaperback
Amazon.comA Buy on Amazon ~ 0897472659
SKUVIB0897472659
Price New22.95 US Dollars    (curriencies)
Price Used6.98 US Dollars    (curriencies)
Width8.25 inches    (convert)
Height11 inches    (convert)
Length0.25 inches    (convert)
AuthorRobert C. Stern
Page Count50
BindingPaperback
Published09/01/1992
FeaturesUsed Book in Good Condition
Long DescriptionThis book recounts the history of aircraft carriers and contains black and white photos and illustrations of the carriers Langley, Lexington, Ranger, Yorktown and Wasp. The book also contains a brief summary of the airplanes used on the carriers and aircraft performance in combat.
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Created08-01-2012 1:05:00am
Modified05-01-2020 5:12:54am
MD5dad418db9c539007666e1f0b17984a09
SHA25690374bdd39f4b067d0031e0771b929350d51a7b085bd3bdaf9002b05c03e82ca
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Article of interest

Code 128 is a high-density 1D barcode symbology. This barcode set makes use of the entire 128 ASCII characters which include letter, number and symbols.

Code 128 Barcode

As with all barcodes, there are indicators to identify where the barcode starts and stops. These are marked in yellow below. Code 128 also has a check character which has been marked in green. The remainder of the barcode is the data being encoded. The text below the barcode is optional and is for human consumption in the event the barcode can't be scanned or if people also need to know what the code means.

Code 128 Barcode

Each character in the barcode symbol is composed of three bars and three spaces. Each bar or space must range from 1-4 units and the sum of all the width of all bars must work out to an even number. The stop marker is special because it adds an extra bar of 2 units at the very end (4 bars and 3 spaces). There are three different start markers to to identify which code set is being used. To represent all 128 characters, the code sets can be within a single barcode as needed by using control characters 98-101 (depending on the code set).

The check character is calculated by summing the value of each character and multiplying it by its position. The start character is also part of the sum but is added without weight (multiply by 1 just like the first encoded data character) then when you have the sum take the modulo 103 remainder. This gets a little more complex when mixing modes within a single barcode.

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