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EAN-139780746047057   EAN-13 barcode 9780746047057
Product NameCaterpillars and Butterflies (Beginners)
LanguageEnglish
CategoryBook / Magazine / Publication
Amazon.comA Buy on Amazon ~ 0746047053
SKU0925-WS1701-A03067-0746047053
Price Used1.98 US Dollars    (curriencies)
AuthorStephanie Turnbull
Page Count32
BindingHardcover
Published01/31/2003
Long DescriptionThis exploration of caterpillars and butterflies is part of a series introducing children to the wonder of the world around them. It has two reading levels, with a simple sentence on each page for beginners, accompanied by more complex information which can be read as the child's ability grows.
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Created10-04-2012 3:48:47am
Modified04-09-2017 8:49:58pm
MD5228d40e3ad7353d5933e278c95426ef3
SHA256bd9af37c0f7f01dc62303c6ea09a2c87361ea2b84b0d0dffa065f1a4f255522a
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Query Time0.0214620

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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