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Introduction to Computers

Lesson 3A Introduction to Computers Two Kinds of Monitors Cathode ray tube (CRT) Flat-panel display Monitor Categories Based on Color Display Monochrome: One color on a black background Grayscale: Shades of gray on a white or off-white background

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Introduction to Computers

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  1. Lesson 3A Introduction to Computers

  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 display’s 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

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