Subject

    Computer Science

    Topic

    Computer Hardware

    Which display technology works by passing light through liquid crystals whose orientation is changed by an electric field?

    a)
    CRT (Cathode Ray Tube)
    b)
    Plasma
    c)
    LCD (Liquid Crystal Display)
    d)
    OLED (Organic Light Emitting Diode)

    Explanation

    LCD panels are essentially a sandwich of filters and liquid crystals placed in front of a backlight. By applying voltage to the crystals, they twist or untwist, controlling how much light passes through the color filters to create an image on the screen. OLED is different as its pixels generate their own light.

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