List the operating characteristics for the video display systems based on the CRT technology?
1.A beam of electrons emitted by an electron gun, passes through focusing System and deflection systems that direct the beam toward specified positions on the phosphor-coated screen. 2.The phosphor-coated screen then emits a small spot of light at each position contacted by the electron beam. 3.The light emitted by the phosphor fades very rapidly, the picture is redrawn by quickly directing the electron beam back over the same points. This type of display is called a refresh CRT.
