Barcode is
a method which contains some black and white lines with variable thickness. You
can store stock code, serial numbers or any other information in a barcode.
Barcode is a reference number. It must contain a number which
points a product. You must get the other information such as price, name etc for
the product by using this reference number. Barcode must not contain any
explanation about the product. This reference number is stored in computer and
other needed data is got with this reference number from computer.
There are many barcode symbologies in the world. Barcode
symbology determines whether barcode will contain special character or alpha
numeric characters and how the thickness of the lines will be. Some barcode
symbologies contain only numbers and some contain special characters. So there
are many barcode types in the world but some of them are commonly used. Cod39,
Code93, Upca, ean8, ean13 are used widely.
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