Study
CS-724 route
Unit 2 · Lesson 2 of 4 5 min

Raster-Scan and Random-Scan Displays

Should the beam sweep the whole screen or trace only the lines you draw — that one choice split displays into two families.

What this unit covers

Unit 2: Graphics Display Devices

  1. 1 The Cathode Ray Tube (CRT)Heat a wire, bend the electrons with magnets, and a coat of phosphor glows: the electron cannon inside every old TV. · 6 min
  2. 2 Raster-Scan and Random-Scan DisplaysShould the beam sweep the whole screen or trace only the lines you draw — that one choice split displays into two families. · 5 min
  3. 3 Flat-Panel Displays: LCD, LED, Plasma and OLEDThe heavy glass box is gone — so how does a thin panel make its pictures, and which panels make their own light? · 7 min
  4. 4 Display Resolution, Aspect Ratio and Frame-Buffer SizeA few simple numbers tell you exactly how much memory it takes to fill a full-HD screen with colour. · 4 min