S3_Hardware_Bar+Code+Scanners

Definition/Theory (Class Summary)
an electronic device for reading printed barcodes. Like a flatbed scanner, it consists of a light source, a lens and a light sensor translating optical impulses into electrical ones. Additionally, nearly all barcode readers contain // decoder // circuitry that analyses the barcode's image data provided by the sensor and sending the barcode's content to the scanner's output port.

Examples or Activities

 * Bar Code reader/scanner