What is a Bar Code?
More detail:
Bar code, composed of bars and spaces of varying width, provides a means of expression for human-readable characters in a form (bars and spaces) readable by machines
Black and white stripes, such as those shown below, are often seen on packages of snacks, foodstuff, and sundries stacked on supermarket shelves or convenience stores - these are known as "Bar Code". The bar code can also be found on industrial products, or on delivery request forms for home and office deliveries - their uses are wide ranging.
And in order to read the bar code, there are a wide variety of readers available, each designed for a specific purpose.
Let's take a look at a bar code in more detail:
Bar Code Structure
- Margin
- Spaces, normally white, where nothing printed are required at each end of the code and they should be 10 times that of a narrow bar.
- Bar code symbol
- The area composed of bars and spaces is known as the "bar code symbol".
- Bar code
- The symbol togethre with the left and right margins make up what is called bar code.
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Data
(message)
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Stop
character
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