Introduction to Computers Section 3 A Two Kinds

Introduction to Computers Section 3 A

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

Monitor Categories Based on Color Display n n n 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, 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 n n Passive matrix LCD Active matrix LCD

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

Considerations When Monitor Shopping n n Size Resolution Refresh rate Dot pitch

Video Controller n n 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 home

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