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CompTIA A+ > Laptop Displays > Flashcards

Laptop Displays Flashcards

1
Q

what does LCD stand for?

A

Liquid Crystal Display

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2
Q

Name three of the type of LCD monitors

A
  • Twisted Nematic
  • In-plane switching
  • Vertical alignment
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3
Q

What does OLED stand for?

A

Organic light Emitting Diode

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4
Q

What type of backlights are used in older model laptops?

A

Cold Cathode Florescent Lamps (CCFL)

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5
Q

What type of backlights are used in newer model laptops?

A

Light Emitting Diode (LED)

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6
Q

What is responsible for giving screen brightness and power to the backlight?

A

Inverter

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7
Q

What is the function of a digitizer?

A

converts analog data into digital signals for the COM

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8
Q

What is an input function?

A

Giving information into the system

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9
Q

What is an output function?

A

releasing information out the system

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10
Q

What is a docking station?

A

A hub device, providing additional ports and connections

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11
Q

What is a burn-in pixel?

A

Permanent screen discoloration caused by a static image

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12
Q

What is a Stuck Pixel?

A

A pixel that stays one color other than the ones around them

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13
Q

Dead Pixel?

A

A powerless pixel that stays black

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14
Q

Name the characteristic features of In-plane switching

A
  • Wide viewing angles
  • High color quality
  • Slow response times
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15
Q

Name the characteristic features of Twisted Nematic

A
  • Low viewing angles
  • Low color quality
  • Fast response times
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16
Q

Name the characteristic features of Vertical Alignment

A
  • High viewing angles
  • High color quality
  • High contrast ratios
17
Q

How does LCD work?

A

Light from the backlight shines through the liquid crystals

18
Q

How does OLED work?

A

The organic compound provides the light

19
Q

What is OLED’s biggest con about them?

A

Without a backlight, OLED cannot shine as bright as a LCD display

20
Q

What is LCD’s biggest con about them?

A

Black is the hardest to display due to their high contrast

21
Q

How are CCFL different from LED’s?

A

CCFL’s uses multiple bulky lamps that are horizontally placed
LED uses multiple small bulbs that are arranged in a pattern

22
Q

What kind of power does inverters convert to give to the backlight

A

It converts DC into AC

23
Q

Examples of a Digitizer

A

-Phone screens
- touchpads
- Graphic Tablets

24
Q

Input devices examples

A
  • Keyboard
    -Mouse
    -Microphone
25
Q

Output device examples

A

-Headphones
-Speaker
-Printer

CompTIA A+ (5 decks)

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