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Barcode reader
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{{Short description|Electronic device}} {{More citations needed|date=December 2024}} A '''barcode reader''' or '''barcode scanner''' is an [[optical scanner]] that can read printed [[barcode]]s and send the data they contain to [[computer]].<ref>{{Cite web |date=2024-03-08 |title=Barcode {{!}} Definition, Examples, & Facts {{!}} Britannica |url=https://www.britannica.com/technology/barcode |access-date=2024-05-06 |website=www.britannica.com |language=en}}</ref> Like a [[flatbed scanner]], it consists of a light source, a lens, and a light sensor for translating optical impulses into electrical signals. Additionally, nearly all barcode readers contain ''decoder'' circuitry that can analyse the barcode's image data provided by the sensor and send the barcode's content to the scanner's output port.
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