A solid-state memory that consists of one or more shift registers formed from charge-coupled devices and that is used to store digital information. CCD memory is inherently slower, cheaper, and more compact than RAM and is suitable for applications that are either serial in nature or that do not require the fast operating speeds of RAM.

High operating speeds can be achieved using a number of short CCD shift registers that are clocked in parallel, each of which is connected to its own sense/refresh circuits. A particular register may be selected using suitable decoding circuits. In recent years the emergence of flash memory has largely superseded the use of CCD as a serial memory device.