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CompTIA A+ 220-1001 > laptop displays/features and mobile devices 1.2/1.3/1.4 > Flashcards

laptop displays/features and mobile devices 1.2/1.3/1.4 Flashcards

1
Q

What does LCD stand for?

A

Liquid crystal display

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2
Q

What does OLED stand for?

A

Orangic light emitting diode

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3
Q

Does LCD require back light to work?

A

Yes

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4
Q

How does OLED emit light?

A

By being charged with electrical current

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5
Q

OLED is thinner and lighter than LCD so why isn’t it used for for portables devices such as laptops?

A

since OLED is organic that means it will display decay/degraded

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6
Q

What does LED stand for?

A

Light emitting diode

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7
Q

What does CCFL stand for?

A

Cold cathode fluorescent lamp

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8
Q

Why are CCFL not used as much nowadays?

A

Because they add thickness to portable product which is not ideal and they use more power than LEDs

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9
Q

What backlight uses an inverter?

A

CCFL

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10
Q

What is the purpose of a inverter for a backlight?

A

They convert DC power into AC.

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11
Q

What input does a digitiser use?

A

A stylus input

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12
Q

What’s an alternative to digitisers?

A

Touchscreen

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13
Q

Why are function keys used on a laptop?

A

To save space

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14
Q

What are docking station used for?

A

To connect externally devices to a laptop mouses, keyboards etc

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15
Q

What are expansion cards used for?

A

To increase memory via docking station

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16
Q

What is the small version of a docking station called?

A

Port replicator

17
Q

What is a security measure you can take to secure your laptop?

A

Use a physical laptop lock

18
Q

What feature would a laptop have making presentation easier?

A

Rotating/removing screen

19
Q

What input does a tablet/smart phones use?

A

Touchscreen

20
Q

What does VR stand for?

A

Virtual reality

21
Q

What’s the difference between augmented reality and virtual reality?

A

Augmented reality is like pokemon go and VR allows you to step into a virtual world

22
Q

What can e-reader do?

A

It specialised in reading books but it can also perform other functions such a music etc

23
Q

Since e-readers don’t use LCD what does that mean?

A

That means it performs well under direct light and it has exceptionally long battery life

24
Q

What does GPS stand for?

A

Global Positioning System

25
Q

Why does a GPS need clear view of the sky to operate?

A

To receive gps signals

26
Q

Why does a gps need periodic updates?

A

In case there have been street changes

CompTIA A+ 220-1001 (10 decks)

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