If it touches the ceiling, it’s almost large enough

March 27, 2015



Which of these would be most associated with an LCD display?

A) LEDs are used as a backlight

B) Bright lights are used to project an image on the wall

C) Display cells contain noble gas and mercury

D) An electron beam “paints” the image on the screen

E) The screen must be periodically degaussed

F) The screen is never quite big enough


The answer: A) LEDs are used as a backlight

It’s common to use LEDs (light emitting diodes) or fluorescent lights to light an LCD panel.

Want to know more? Watch “An Overview of Display Device Types.”

There are many ways to display the output from your computer. In this video, you’ll learn about CRTs, LCD technology, LED and OLED, plasma displays, and digital projector technology.

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Category: CompTIA A+ Pop Quizzes

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