What are the technologies used behind the barcode or scanners?

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Other scanner types used over the decades include omnidirectional bar code laser high-speed scanners, video camera readers, down to miniature (

Wand; MICR; OCR; Laser scanner; None of the above A MICR B None of the above C A bar code reader is an electronic device that can READER SERVICE CARD Labeling Software For Dot Matrix or LaserJet Bar Code Readers for PC, XT, AT, PS2, Mac and RS-232 Tenninals Portable Bar Code Readers

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