Q2. Which of the following best describes the difference between a touchscreen display and a standard display?
A. A touchscreen adds an inverter to the display
B. A touchscreen adds a digitizer layer on top of the display
C. A touchscreen adds a backlight to the display
D. A touchscreen adds a plasma layer to the display
Correct Answer: B
Explanation:
A touchscreen adds a digitizer layer to the display. The digitizer detects the pressure of a touch. Inverters and backlights are found on LCD screens in laptops. Plasma displays popular in home big-screen TV systems, are made of small cells of ionized gas.
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