Introduction to Computers - PowerPoint PPT Presentation

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Introduction to Computers

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Monitor Categories Based on Color Display. Monochrome: One color on a black background ... Pixel, short for picture element, is the smallest number of phosphor ... – PowerPoint PPT presentation

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Title: Introduction to Computers


1
Introduction to Computers
  • Lesson 3A

2
Two Kinds of Monitors
  • Cathode ray tube (CRT)
  • Flat-panel display

3
Monitor Categories Based on Color Display
  • Monochrome One color on a black background
  • Grayscale Shades of gray on a white or off-white
    background
  • Color From 16 to 16 million unique colors

4
Pixel
  • Pixel, short for picture element, is the smallest
    number of phosphor dots that the electron gun
    inside the monitor can focus on

5
Shadow mask
  • A fine mesh made of metal and fitted to the shape
    and size of the screen

6
Liquid Crystal Display (LCD) Monitor
  • Most common flat-panel monitor

7
Viewing Angle
  • The angle from which the displays image can be
    viewed clearly

8
Two Categories of Liquid Crystal Displays
  • Passive matrix LCD
  • Active matrix LCD

9
Other Kinds of Monitors
  • Paper-white display
  • Electroluminescent (ELD) display
  • Plasma/gas plasma display

10
Considerations When Monitor Shopping
  • Size
  • Resolution
  • Refresh rate
  • Dot pitch

11
Video Controller
  • Intermediary device between the CPU and the
    monitor
  • Controls how things look on-screen

12
Digital Light Projector
  • Connects to a computer and is used to project
    images on a large screen

13
Sound Card
  • Translates digital sounds into the electric
    current that is sent to the speakers

Click to Enlarge
14
Lesson 3A
  • Monitors and Sound Systems

15
Review Questions
  • What are the two kinds of monitors?
  • What are the monitor categories based on color
    display?
  • What is a pixel?
  • What is a video controller?

16
How a Sound Card Works
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