lesson 7 display devices Flashcards by paul mandarino

what are the video display types?

LCD,LED Monitors, OLED,

Plasma, Projectors

How well did you know this?

Not at all

Perfectly

what is LCD?

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

How well did you know this?

Not at all

Perfectly

what are 2 types of important active matrix LCD technologies?

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

How well did you know this?

Not at all

Perfectly

what is Twisted nematic (TN)?

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

How well did you know this?

Not at all

Perfectly

what is In-plane switching (IPS)

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

How well did you know this?

Not at all

Perfectly

what do LCD Displays use ?

LCD Displays use Cold Cathode Fluorescent

Lamp as the lighting source

How well did you know this?

Not at all

Perfectly

what kind of diodes do LED monitors use?

light-emitting diodes, Organic light-emitting diodes

How well did you know this?

Not at all

Perfectly

what 2 different types of technologies do LED use?

Surface-mounted device (SMD) technology

Discrete LED technology

How well did you know this?

Not at all

Perfectly

what is Surface-mounted device (SMD) technology?

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

How well did you know this?

Not at all

Perfectly

what is Discrete LED technology?

Clusters the triades together

into pixels

How well did you know this?

Not at all

Perfectly

How does plasma work?

Use small cells that contain electrically

charged ionized gases; Basically they are fluorescent lamps

How well did you know this?

Not at all

Perfectly

what is Light output measured in?

Lumens

How well did you know this?

Not at all

Perfectly

what are projectors available in?

LCD, LED, and DLP (Digital

Light Processing) versions

How well did you know this?

Not at all

Perfectly

what is bit depth?

number of bits

that represent colour

How well did you know this?

Not at all

Perfectly

What is 1 bit colour?

a binary number

with one digit.

How well did you know this?

Not at all

Perfectly

what is display resolution?

the number of
pixels (picture elements) on
a screen

How well did you know this?

Not at all

Perfectly

what is Aspect ratio ?

an image’s width divided by its height

How well did you know this?

Not at all

Perfectly

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

1366x768, 16:9

what does WSXGA+ (HD) stand for?

Widescreen Super
eXtended Graphics Array
Plus (High Definition)

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

1680x945, 16:9

what does WUXGA stand for?

Widescreen Ultra

eXtended Graphics Array

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

1920x1200, 8:5

what is HD 1080p & 1080i?

Full High Definition

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

1920x1080 ,16:9

what is QHD (WQHD) 1440p ?

Quad High Definition

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

2560x1440, 16:9

what is UHD 4K?

Ultra High Definition

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

3820x2160, 16:9

what is Refresh rate?

number of times a display is “painted” per second

what is OSD ?

On Screen Display can | help configure picture quality

what problems does OSD solve?

distortion, picture size, centering, | contrast and brightness

how do you access OSD?

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

what is the first step in solving monitor issues?

Check Connections

what is the second step in solving monitor issues?

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

what is the third step in solving monitor issues?

Check for an onboard video setting in the UEFI/BIOS

what is the fourth step in solving monitor issues?

Resolution settings

what is the fifth step in solving monitor issues?

Check the driver

what is the sixth step in solving monitor issues?

Check the version of DirectX

what is the seventh step in solving monitor issues?

Check the temperature threshold of the video card

what is the eighth step in solving monitor issues?

Use software to check and repair stuck or dead pixels

what is the ninth step in solving monitor issues?

Calibrate the monitor

what is the tenth step in solving monitor issues?

Use a filter on the monitor

what is the eleventh step in solving monitor issues?

Check for newly installed applications

what is the twelveth step in solving monitor issues?

Check inside the computer