Barcode reader
Barcode Reader
A barcode reader also know as barcode scanner is an electronic device for reading printed barcodes, it consists of a light source, a lens and a light sensor translating optical impulses into electrical ones.
Types Of Barcode Reader
Pen-type readers
Pen-type readers consist of a light source and photodiode that are placed next to each other in the tip of a pen or wand.
Laser scanners
Laser scanners work the same way as pen type readers except that they use a laser beam as the light source and typically employ either a reciprocating mirror or a rotating prism to scan the laser beam back and forth across the bar code.
CCD readers
CCD readers use an array of hundreds of tiny light sensors lined up in a row in the head of the reader. Each sensor measures the intensity of the light immediately in front of it.
