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Introduction to Computers

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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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Presentation Transcript
two kinds of monitors
Two Kinds of Monitors
  • Cathode ray tube (CRT)
  • Flat-panel display
monitor categories based on color 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
  • Color: From 16 to 16 million unique colors
pixel
Pixel
  • Pixel, short for picture element, is the smallest number of phosphor dots that the electron gun inside the monitor can focus on
shadow mask
Shadow mask
  • A fine mesh made of metal and fitted to the shape and size of the screen
liquid crystal display lcd monitor
Liquid Crystal Display (LCD) Monitor
  • Most common flat-panel monitor
viewing angle
Viewing Angle
  • The angle from which the display’s image can be viewed clearly
two categories of liquid crystal displays
Two Categories of Liquid Crystal Displays
  • Passive matrix LCD
  • Active matrix LCD
other kinds of monitors
Other Kinds of Monitors
  • Paper-white display
  • Electroluminescent (ELD) display
  • Plasma/gas plasma display
considerations when monitor shopping
Considerations When Monitor Shopping
  • Size
  • Resolution
  • Refresh rate
  • Dot pitch
video controller
Video Controller
  • Intermediary device between the CPU and the monitor
  • Controls how things look on-screen
digital light projector
Digital Light Projector
  • Connects to a computer and is used to project images on a large screen
sound card
Sound Card
  • Translates digital sounds into the electric current that is sent to the speakers

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lesson 3a14
Lesson 3A
  • Monitors and Sound Systems
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