TV parts are the components that make up a television set. The most common parts include the SCREEN, tele, CRT, DIAL, TUBE, and picturetube. The SCREEN is the flat panel display that shows the image, while the tele is the electronic circuitry that controls the television's functions. The CRT is the cathode ray TUBE, which is the device that produces the image on the SCREEN. The DIAL is the knob used to change channels or adjust the volume. The TUBE is the vacuum TUBE that amplifies the signal, and the picturetube is the device that receives the signal and converts it into an image.