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I want to interface barcode reader to my application.

Can any one give idea
[no name] 25-Jun-12 7:03am    
Plug barcode reader into computer
Write code to read from barcode reader.

Most barcode readers interface by providing codes as if they came from the keyboard. If you need any other form of data, most will provide a lead in and lead out character or sequence which allows you to identify data. The manufacturer will be able to give you details of how to use it.
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There is a toolkit named leadtools that can read and write 1D and 2D Barcodes. Take a look for this article and see if this will help you:
How to Read Barcodes from Images using LEADTOOLS
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