Introduction to Computers Lesson 3A. home Two Kinds of Monitors Cathode ray tube (CRT) Flat-panel display.

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This lesson includes the following sections:

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Presentation transcript:

Introduction to Computers Lesson 3A

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

home 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

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

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

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

home Viewing Angle The angle from which the display’s image can be viewed clearly

home Two Categories of Liquid Crystal Displays Passive matrix LCD Active matrix LCD

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

home Considerations When Monitor Shopping Size Resolution Refresh rate Dot pitch

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

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

home Sound Card Translates digital sounds into the electric current that is sent to the speakers Click to Enlarge Click to Enlarge

Lesson 3A Monitors and Sound Systems

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?

How a Sound Card Works