"It’s a bit of an over simplification, but broadly speaking digital still
cameras and digital video cameras use the same basic technology. They both
usually have a CCD image sensor, a compact but powerful
zoom lens, electronic systems for autofocus, exposure metering and image
processing, and both record the results onto a digital storage medium. In
the case of video cameras this is usually digital video tape, while still
cameras generally use removable flash memory cards."