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CTA-19238 (Do not use - Wrong info) > Displays > Flashcards

Displays Flashcards

1
Q

True or false: The gpu handles communication between the monitor and the CPU

A

Yee

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2
Q

CRTs were dangerous. Why?

A

They had toxic materials inside

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3
Q

True or false: Light travels horizontally and vertically at 90 degree angles only

A

False. Light travels in waves at all kinds of angles.

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4
Q

True or false: Many waves of light create the image of white

A

True

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5
Q

True or false: Singular waves of light create an image of a specific colour

A

True. The colour depends on the wavelength.

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6
Q

What do liquid crystals do when charged

A

They straighten out and block light that is vertical

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7
Q

What happens when no elec is applied to Liquid crystals?

A

They allow light to pass through horizontally

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8
Q

How do liquid crystals work

A

They bend light and control how much light escapes through the polarizing filter after it, deciding the brightness of the light that gets through.

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9
Q

What is the order in which light goes from the backlight to the RGB filter

A

Backlight > Polar Horizontal (Allows Horizontal) > LC > Polar Horizontal (Allows vertical) > RGB filter

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10
Q

True or false: The B>P>LC>P>CF nonsense takes place within a single sub-pixel?

A

True

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11
Q

What is the difference between a pixel and a sub-pixel

A

A pixel is three combined subpixels with colour filters of RGB.

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12
Q

What are 2 benefits and drawbacks of TN?

A

Pros
Cheap
Fast response times

Cons
Bad colour
Bad viewing angle

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13
Q

What are 2 benefits and cons of IPS

A

Pros
Good colour
Good viewing angles

Cons
Expensive
Slower response times

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14
Q

What are 2 pros and cons of va panels

A

Pros
Good contrast ratio
Good midground between tn and ips

Cons
Black smudging
Shit response times

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15
Q

What does an inverter do?

A

Converts DC power to AC for legacy monitors

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16
Q

What is edge backlighting?

A

When backlights are around the edge of the monitor. This can lead to the middle of the screen looking dark.

17
Q

What does CCFL mean

A

Cold cathode florescent lamp

18
Q

What is 640x 480

A

VGA mode

19
Q

What is PPI

A

Pixels per inch - Tells of the screen’s overall clarity by taking resolution and size of the screen into account.

20
Q

What is a good and bad PPI number?

A

70 or less is bad

100-110 is good

21
Q

What is monitor brightness measured in?

A

Nits

22
Q

What is the standard range of nits for monitors?

A

100-1000. 300 avg.

23
Q

What is Oled?

A

A technology that uses an organic compound that, when, charged, lights up. This means no backlight is needed.

24
Q

Which technology claims to have “true blacks”

A

OLED

25
Q

Name five display connectors

A 
VGA
DVI
HDMI
Displayport
Thunderbolt
26
Q

What connectors has thunderbolt been known to use?

A

Minidisplay port, usb-c

27
Q

How can you tell if a port is thunderbolt compatible?

A

A small lightning bolt will be next to it.

28
Q

What are the three types of DVI connection

A

A,D,I

29
Q

A monitor’s image is shifted slightly to the left. What tool can be used to fix this?

A

Physical screen adjustment using the monitor’s built in menu

30
Q

What is the measurement of light used with projectors?

A

Lumens

31
Q

What is the suggested lumen rating for a large room

A

10,000 lumens

32
Q

What is throw distance

A

The max distance the projector can be to the projection surface.

33
Q

Is an ultra-short throw distance implying the projector needs to be closer for farther away from the projection surface?

A

Closer

34
Q

What is the lumen suggestion for a small, dark room.

A

1000-1500

35
Q

What is the most popular type of projector lamp

A

Metal halide

36
Q

What are three characteristics of metal halide

A

Bright
Small form factor
3000h

37
Q

What are three characteristics of LED projector lamps

A

Less cooling needed, RGB, 20K hour usage

38
Q

What are three characteristics of Laser lamps

A

Bright
Colourful
30,000h

39
Q

A display is glitchy and looks like a mess, but works fine in VGA mode. What is likely the issue?

A

Drivers

CTA-19238 (Do not use - Wrong info) (23 decks)

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