LED Display is a screen display technology that uses a panel of LEDs as the light source.
Light-Emitting Diode Display (LED Display): LCDs’ main advantages are lower power consumption, cover less space than a conventional monitor, reduction in cooling load (as these radiate less heat), high-performance monitors, flexibility of usage, and more viewing area. And so sometimes they are called “ Liquid Crystal Display” referring to the material they use or they are called “ TFT displays” referring to the tiny transistors that make them work.
TFT (or Thin Film Transistor) is the device within each pixel that sets the charge. Each tiny cell of liquid crystal is a pixel. This feature allows the pixel to be created. The material has a special property- it can ‘polarize’ light depending on the electrical charge across it. Liquid crystal is the material used to create each pixel on the screen. Simply stated the difference between electronic waves and color pigments requires that green be used instead of yellow to get the appropriate color mixes. A much sharper picture is produced with the RGB monitor because the three electron guns allow finer control over the intensities of the phosphor dots.Īrtists may wonder why red, green, and blue are used as the primary colors instead of red, yellow, and blue. In a red-green-blue (RGB) monitor, three electron guns, one for each dot in a pixel, are used to control the intensity of the phosphor dots. A composite color monitor uses only one electron gun to control the intensity of all three phosphor dots in each pixel.
Two types of color monitors are commonly used composite and red-green-blue. There are many types of monitors available such as CRT (Cathode Ray Tube), LCD (Liquid Crystal Display), and LED (Light Emitting Diodes). A color display that displays results in multiple colors. A monochrome uses only one color (usually white, green, or black) to display the text on a contrasting background. Visual Display Units are available in monochrome or a color display. Pictures on a monitor are formed with picture elements called PIXELS.
They are output devices that show programming instructions and data as they are being input and information after it is processed. Monitors are also known as Visual Display Units (VDUs) or simply screens. Sound Output, Voice Output, Video Output. Non-Impact Printers (Electromagnetic Printers, Thermal Printers, Electrostatic Printers, Inkjet Printers, Laser Printers). Impact Printers (Line Printers, Character Printers). The principal kinds of output are hard copy and soft copy.ĬRT Display Screen, Flat-Panel Display Screen (For Example- Liquid Crystal Display). The output device also converts the binary code obtained from the computer into a human-readable form. Light-Emitting Diode Display (LED Display):Īn output device is a device that accepts results from the computer and displays them to the user.
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