 CCDs move charge between capacitive bins in the device, with the shift allowing for the transfer of charge between bins.Often the device is integrated with an image sensor, such as a photoelectric device to produce the charge that is being read, thus making the CCD a major technology for digital imaging.First conceived in its usefulness for computer memory, the charge coupled device was co-invented in 1969 by American physicist George E. Smith and Canadian physicist Willard Boyle at AT&T Bell Laboratories.