Displays

Question 1

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

Answer 1

Yee

Question 2

CRTs were dangerous. Why?

Answer 2

They had toxic materials inside

Question 3

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

Answer 3

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

Question 4

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

Answer 4

True

Question 5

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

Answer 5

True. The colour depends on the wavelength.

Question 6

What do liquid crystals do when charged

Answer 6

They straighten out and block light that is vertical

Question 7

What happens when no elec is applied to Liquid crystals?

Answer 7

They allow light to pass through horizontally

Question 8

How do liquid crystals work

Answer 8

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

Question 9

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

Answer 9

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

Question 10

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

Answer 10

True

Question 11

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

Answer 11

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

Question 12

What are 2 benefits and drawbacks of TN?

Answer 12

Pros
Cheap
Fast response times

Cons
Bad colour
Bad viewing angle

Question 13

What are 2 benefits and cons of IPS

Answer 13

Pros
Good colour
Good viewing angles

Cons
Expensive
Slower response times

Question 14

What are 2 pros and cons of va panels

Answer 14

Pros
Good contrast ratio
Good midground between tn and ips

Cons
Black smudging
Shit response times

Question 15

What does an inverter do?

Answer 15

Converts DC power to AC for legacy monitors

Question 16

What is edge backlighting?

Answer 16

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

Question 17

What does CCFL mean

Answer 17

Cold cathode florescent lamp

Question 18

What is 640x 480

Answer 18

VGA mode

Question 19

What is PPI

Answer 19

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

Question 20

What is a good and bad PPI number?

Answer 20

70 or less is bad

100-110 is good

Question 21

What is monitor brightness measured in?

Answer 21

Nits

Question 22

What is the standard range of nits for monitors?

Answer 22

100-1000. 300 avg.

Question 23

What is Oled?

Answer 23

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

Question 24

Which technology claims to have “true blacks”

Answer 24

OLED

Question 25

Name five display connectors

Answer 25

``` VGA DVI HDMI Displayport Thunderbolt ```

Question 26

What connectors has thunderbolt been known to use?

Answer 26

Minidisplay port, usb-c

Question 27

How can you tell if a port is thunderbolt compatible?

Answer 27

A small lightning bolt will be next to it.

Question 28

What are the three types of DVI connection

Answer 28

A,D,I

Question 29

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

Answer 29

Physical screen adjustment using the monitor's built in menu

Question 30

What is the measurement of light used with projectors?

Answer 30

Lumens

Question 31

What is the suggested lumen rating for a large room

Answer 31

10,000 lumens

Question 32

What is throw distance

Answer 32

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

Question 33

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

Answer 33

Closer

Question 34

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

Answer 34

1000-1500

Question 35

What is the most popular type of projector lamp

Answer 35

Metal halide

Question 36

What are three characteristics of metal halide

Answer 36

Bright Small form factor 3000h

Question 37

What are three characteristics of LED projector lamps

Answer 37

Less cooling needed, RGB, 20K hour usage

Question 38

What are three characteristics of Laser lamps

Answer 38

Bright Colourful 30,000h

Question 39

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

Answer 39

Drivers