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Explore the world of monitors - from CRT to LCD displays, understand color categories and pixel technology, all to help you make an informed decision when shopping. Learn about viewing angles, different LCD displays, and additional monitor options such as paper-white and plasma displays. Discover essential considerations like size, resolution, and refresh rate, as well as technologies like sound cards and digital light projectors. Dive into this comprehensive guide to monitors and sound systems.
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Section 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 • Color: From 16 to 16 million unique colors
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 • A fine mesh made of metal and fitted to the shape and size of the screen
Liquid Crystal Display (LCD) Monitor • Most common flat-panel monitor
Viewing Angle • The angle from which the display’s image can be viewed clearly
Two Categories of Liquid Crystal Displays • Passive matrix LCD • Active matrix LCD
Other Kinds of Monitors • Paper-white display • Electroluminescent (ELD) display • Plasma/gas plasma display
Considerations When Monitor Shopping • Size • Resolution • Refresh rate • Dot pitch
Video Controller • Intermediary device between the CPU and the monitor • Controls how things look on-screen
Digital Light Projector • Connects to a computer and is used to project images on a large screen
Sound Card • Translates digital sounds into the electric current that is sent to the speakers Click to Enlarge
Section 3A • Monitors and Sound Systems