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lesson 7 display devices > lesson 7 display devices > Flashcards

lesson 7 display devices Flashcards

1
Q

what are the video display types?

A

LCD,LED Monitors, OLED,

Plasma, Projectors

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2
Q

what is LCD?

A

consists of two sheets of polarizing material surrounding a layer of liquid crystal solution.

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3
Q

what are 2 types of important active matrix LCD technologies?

A

Twisted nematic (TN), In-plane switching (IPS)

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4
Q

what is Twisted nematic (TN)?

A

Uses liquid crystals that
actually twist and untwist at different angles, letting certain amounts of light through. Less expensive LCD monitors will used TN technology

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5
Q

what is In-plane switching (IPS)

A

Aligns the liquid crystals on a plane that is parallel to the glass - Uses an additional transistor for each picture
element.

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6
Q

what do LCD Displays use ?

A

LCD Displays use Cold Cathode Fluorescent

Lamp as the lighting source

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7
Q

what kind of diodes do LED monitors use?

A

light-emitting diodes, Organic light-emitting diodes

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8
Q

what 2 different types of technologies do LED use?

A

Surface-mounted device (SMD) technology

Discrete LED technology

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9
Q

what is Surface-mounted device (SMD) technology?

A

More common
for LED monitors; it uses red, green, and blue diodes
that are mounted as individual triads

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10
Q

what is Discrete LED technology?

A

Clusters the triades together

into pixels

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11
Q

How does plasma work?

A

Use small cells that contain electrically

charged ionized gases; Basically they are fluorescent lamps

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12
Q

what is Light output measured in?

A

Lumens

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13
Q

what are projectors available in?

A

LCD, LED, and DLP (Digital

Light Processing) versions

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14
Q

what is bit depth?

A

number of bits

that represent colour

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15
Q

What is 1 bit colour?

A

a binary number

with one digit.

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16
Q

what is display resolution?

A

the number of
pixels (picture elements) on
a screen

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17
Q

what is Aspect ratio ?

A

an image’s width divided by its height

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18
Q

what are the pixel dimensions and the aspect ratio of high definition ready?

A

1366x768, 16:9

19
Q

what does WSXGA+ (HD) stand for?

A

Widescreen Super
eXtended Graphics Array
Plus (High Definition)

20
Q

what are the pixel dimensions and the aspect ratio of WSXGA+ (HD)

A

1680x945, 16:9

21
Q

what does WUXGA stand for?

A

Widescreen Ultra

eXtended Graphics Array

22
Q

what are the pixel dimensions and the aspect ratio of WUXGA?

A

1920x1200, 8:5

23
Q

what is HD 1080p & 1080i?

A

Full High Definition

24
Q

what are the pixel dimensions and the aspect ratio of HD 1080p & 1080i?

A

1920x1080 ,16:9

25
Q

what is QHD (WQHD) 1440p ?

A

Quad High Definition

26
Q

what are the pixel dimensions and the aspect ratio of QHD (WQHD) 1440p

A

2560x1440, 16:9

27
Q

what is UHD 4K?

A

Ultra High Definition

28
Q

what are the pixel dimensions and the aspect ratio of UHD 4K?

A

3820x2160, 16:9

29
Q

what is Refresh rate?

A

number of times a display is “painted” per second

30
Q

what is OSD ?

A

On Screen Display can

help configure picture quality

31
Q

what problems does OSD solve?

A

distortion, picture size, centering,

contrast and brightness

32
Q

how do you access OSD?

A

pressing a button below the display or on one of the sides. From there use arrows
to make modifications.

33
Q

what is the first step in solving monitor issues?

A

Check Connections

34
Q

what is the second step in solving monitor issues?

A

Power cycle the computer, display, and any power protection equipment

35
Q

what is the third step in solving monitor issues?

A

Check for an onboard video setting in the UEFI/BIOS

36
Q

what is the fourth step in solving monitor issues?

A

Resolution settings

37
Q

what is the fifth step in solving monitor issues?

A

Check the driver

38
Q

what is the sixth step in solving monitor issues?

A

Check the version of DirectX

39
Q

what is the seventh step in solving monitor issues?

A

Check the temperature threshold of the video card

40
Q

what is the eighth step in solving monitor issues?

A

Use software to check and repair stuck or dead pixels

41
Q

what is the ninth step in solving monitor issues?

A

Calibrate the monitor

42
Q

what is the tenth step in solving monitor issues?

A

Use a filter on the monitor

43
Q

what is the eleventh step in solving monitor issues?

A

Check for newly installed applications

44
Q

what is the twelveth step in solving monitor issues?

A

Check inside the computer

lesson 7 display devices (1 decks)

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