write a short note on-barcode reader
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A barcode reader (or barcode scanner) is an optical scanner that can read printed barcodes, decode the data contained in the barcode and send the data to a computer. Like a flatbed scanner, it consists of a light source, a lens and a light sensor translating for optical impulses into electrical signals.
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α ճαɾcօժҽ ɾҽαժҽɾ (օɾ ճαɾcօժҽ scαղղҽɾ) ís αղ օթԵícαl scαղղҽɾ ԵհαԵ cαղ ɾҽαժ թɾíղԵҽժ ճαɾcօժҽs, ժҽcօժҽ Եհҽ ժαԵα cօղԵαíղҽժ íղ Եհҽճαɾcօժҽ αղժ sҽղժ Եհҽ ժαԵα Եօ α cօตթմԵҽɾ. líkҽ α բlαԵճҽժ scαղղҽɾ, íԵ cօղsísԵs օբ α líցհԵ sօմɾcҽ, α lҽղs αղժ α líցհԵ sҽղsօɾ ԵɾαղslαԵíղց բօɾ օթԵícαl íตթմlsҽs íղԵօ ҽlҽcԵɾícαl síցղαls.
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