LCD+screens

A liquid crystal display (LCD) is a flat panel display, electronic visual display, or video display that uses liquid crystals. Liquid crystals do not emit light directly.LCDs are used in a wide range of applications including computer monitors, televisions, instrument panels, aircraft cockpit displays, and signage. They are common in consumer devices such as video players, gaming devices, clocks, watches, calculators, and telephones. Advantages of an LCD screen: Disadvantages of an LCD screen:
 * __LCD screens (output device)__**
 * Very compact and light.
 * Low power consumption.
 * No distortion.
 * The possible ability to have little or no flicker depending on backlight.
 * Usually no refresh-rate flicker
 * Is very thin which allows the monitor to be placed farther back from the user
 * Razor sharp image.
 * Can be made in almost any size or shape.
 * No theoretical resolution limit.
 * Can be made to large sizes (more than 24 inches) lightly and relatively inexpensively.
 * Unacceptably slow response times in low temperature environments.
 * Loss of contrast in high temperature environments.
 * Poor display in direct sunlight.
 * Limited viewing angle.
 * Black levels may appear bright.