Definitions for "Charge coupled device"
A device in a camera that takes the light falling onto it and converts it into an electrical signal
A CCD is a semiconductor device which converts light (including X-rays) into electrical charges. The charges are then read out using a complex arrangement of electrodes, which also divides the CCD into many small, discrete areas (we call these "pixels" - or picture elements).
a bar code scanner which senses the light and dark areas of a symbol