شاشات العرض

א א

3

א

אא א

א א

-38-

אאWא אאW

אאאאאK

אאאאW o אאאאאCRT

o אאאאLCDK

אאאW6K

אא א

א א

-39-

אאאא،אאK

אאא CRT אאא LCD .

אאF( CRT MonitorsW

אCRT W

אאאW 1 JCRT א،אK

אא א

א א

-40-

2 JCRTאFFlatironsEאאאאK

CRT W

א CRT א Cathode Ray Tube א،אא ،א60אא

K

אא א

א א

-41-

אאא J J

אאא،אאא אא

אא،א אאא، אK

אאאאאאאאאאאאאK

אאאאא ،אאאאא א

K

،א א ( horizontal scan line)

،אא،אא אא،אא אא

א horizontal frequency KHzK

،אא?אא horizontal

blanking interval אאאא ،א

אא א

א א

-42-

א،א،א אא?אא vertical blanking intervalK

אאא אאאאK

אאא אאאאא vertical

refresh rate or frequency .

אא،אא ،אאא אאא>א

א אא،אאא

אF1،3،5،EKKKאאאאא אאאF2،4،6،EKKKאאא ،א

field א. frame

א אא،אאאא אאאא،א אאא

،אאאאW،א אאא،אאא ،אאאאא

אא אFאאאא אE.

אאאא אאאא ،אאא א

:

אא א

א א

-43-

אאWא Shadow Mask:

אאאאWאאא אF،،Eאא:

א א،א invar אאא

א،אאא אאאא א:

אא א

א א

-44-

אאWאאא Aperture Grille:

אאאאאא אא א א:

אאאא ،אאא א

אא:

אא א

א א

-45-

אאKKא، אא

א،אאאא resolution א אאא13.5

25 30א،אא60 85.

Wresolution אאא אא(pixels) .

CRTW

אא CRT، אאאKאא ،א

אא אresolution ،אא85، אFא

אא א

א א

-46-

אאEאK אאאא،85 אא:

85Z1024x768 85.

95Z1280x1024 85.

107 ZF1 600x1200(85.

115 ZF2E 600x1200 92 .

125 Z1856x1392 85 .

א600x1200 107115K אא

אאאא.

،אא،אאKאאא א shadow mask

אאאא، aperture grille

אK אא אא. LCDאא CRT

،אאאאא א LCDK

אא א

א א

-47-

א LCD Monitors:

LCD אLiquid Crystal Display אאא אK א LCD אאK

אLCD W 1 JDual scan אאK 2 JReflectiveא،אא PDA .

3 J TFTאאK LCD W

א אאאאא ،אאאאא אאא א

אKאא אא ،אאאא א

א> א،א ،Wא ?W (RBG Filter) RGB א

אFאאEאKא אאאאאאא

אא א

א א

-48-

א ،אאאא אאKאא א،אאא

אא א אאא،א אאא

،אא אאא אאKא

אאא Liquid Crystals:

א אא א،אאאא אKא145.5°

אא178.5°K

א

אא14א21Kאאא1719אאאאK

אCRT אאאאאאאאאKא

אא19אCRT אאא17.5KLCD אאא15

אאאא15K

אא א

א א

-49-

אאאW א CRT LCD؟

א אאא، אאאא אא:

א LCD (TFT) Cathode Ray (CRT)

Brightness 170 (+) א to 300 cd/m²(~) 80 to 120 cd/m²

Contrast 150:1 (-) א to 450:1 (+) 350:1 to 700:1

Viewing angle א א

(~) 90° to 170° (+) 150°

א Convergence errors

(+) (~) 0.0079 to 0.0118" (0.20 to 0.30 mm)

Focusא (+) א (~) אא

Geometry א (+) (~) Defective pixels

אא (-) 8 (+)

Input signal א

(+) analog digital

(~) analog

Possible Resolutions אא

(-) (+)

Gamma (א אא)

(~) (+) א

Uniformity א (~) אא

(~) א

א Color purity/color

(-) א (+) א

אא א

א א

-50-

quality Flickering אא (+) (~)

85

אאא Affected by magnetic

fields?

(+) (-)،אא

Pixel response time א א

(-) 20 to 50 ms

(+) not visible

Power consumption אא

(+) 25 to 40 Watts א

(-) 60 to 160 Watts א

א Space

requirements/weight

(+) א (-) א

אW

אאאאאW

1K ؟א

2K ؟א

3K ؟אאא

4K ؟אאאא

5K ؟אאK

6K א؟א،אאאK

7K ؟אא

8K אאאאK

אא،אאאא

אא א

א א

-51-

1K אאK

2K אאאאאאאאאאK

אא א

א א

-52-

א אאWאא

K

אאאW אאK

אK

אאK

אאK

אא א

א א

-53-

אא אא

אאWאK

Wאאאא

1K

2K

אאW 1K אאאאאK

2K אאK

3K אאאK

4K אאאאK

5K אW

1K אא 2K אFCRT - LCDE 3K א 4K אModel 5K אאS/N 6K אאא 7K

6K אK 7K אאאK

אא א

א א

-54-

W

1 JאאCRT K

KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK

2–אK

KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK


אא א

א א

-55-

3 JאאLCD K

KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK

4 JאK



5– CRT LCD K




אא א

א א

-56-

א

אאאאא،אאאF√Eאאא

אא،אאK

אאFאאE

א

1K אא

2K אCRT

3K CRT

4K אLCD

5K LCD

אאאא،א????אאא

אK

אא א

א א

-57-

א א

KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK

אאאF√EאאאאאאאK

אאFאE א

א

1 אאא 2אאCRT 3אCRT 4אאLCD 5אLCD 6 7 8 9 10 11 12

،אאאאא????אאאאK

شاشات العرض

Education