A Display is a computer output surface and projecting technique which shows text and often graphic images to the computer user and we can use a cathode ray tube ( CRT ), liquid crystal display ( LCD ), light-emitting diode, gas plasma, or other image projection technology. The Display is usually considered to include the screen or projection surface and the device that produces the information on the screen. In some computers the Display is packaged in a separate unit called a monitor and it is integrated into a unit with the processor and other parts of the computer. Display is glass and plasma device which have multiple colors and gasses which are help to colored objects.