Conventional video displays consist of a series of images, or "frames", representing single snapshots in time. When the frames are updated rapidly enough, changes in those images provide the illusion of continuous motion. This makes normal television tubes unsuitable for computer displays, where the image is generally static for extended periods of time (as it is while you read this). The solution is to use additional hardware and computer memory to store the image between each update, a section of memory known as a framebuffer.