Chapter 4

Display Devices

The following CompTIA A+ 220-801 objectives are covered in this chapter:

  • 1.10 Given a scenario, evaluate types and features of display devices.
    • Types
    • CRT
    • LCD
    • LED
    • Plasma
    • Projector
    • OLED
    • Refresh rates
    • Resolution
    • Native resolution
    • Brightness/lumens
    • Analog vs. digital
    • Privacy/antiglare filters
    • Multiple displays

The primary method of getting information out of a computer is to use a computer video display unit (VDU). Display systems convert computer signals into text and pictures and display them on a TV-like screen. As a matter of fact, the first personal computers used television screens because it was simpler to use an existing display technology rather than to develop a new one. Various types of computer displays ...

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