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EAN-139780442250829   EAN-13 barcode 9780442250829
Product NameConversation in Spanish: Points of departure
LanguageEnglish
CategoryBook / Magazine / Publication
Short DescriptionPaperback
Amazon.comA Buy on Amazon ~ B0007E5IWO
Price Used3.30 US Dollars    (curriencies)
AuthorFrank Sedwick
Page Count115
BindingPaperback
Published04/26/1969
Long DescriptionDesigned for dynamic conversational interaction as early as the second semester of Spanish, Conversation in Spanish presentsmore than 50 photos or photo-collages with a series of guided questions to elicit students' analytical and linguistic skills.
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Created01-22-2013 11:09:36pm
Modified04-26-2017 8:50:38am
MD5c0061715c1e7999218072ee19f011c20
SHA256e6d239e5f7fb5bbc86462fddf055c1b4517b868220b1c4503537337f31b86e36
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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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