Output peripheral equipment

How does an LCD?
- Vertical filter film to polarize the incoming light.
- Glass substrate with electrodes of indium oxide ITO. The shapes of the electrodes determine the black shapes that appear when the screen turns on and off. The vertical edges of the surface is smooth.
- Liquid crystals "Twisted Nematic (TN).
- Glass Substrate common electrode film (ITO) with horizontal ridges to line up with the horizontal filter.
- Horizontal filter film to block / allow the passage of light.
- Reflecting surface to send light back to the viewer. A backlit LCD, this layer is replaced by a light source. Classification of screens depending on whether the light source emits it's own screen or reflected from an external source:
- Transmissive illumination: own source (LCDs).
- Lighting reflexive external source (screens of watches, calculators, etc.)
--- Types of matrices:
- Passive Matrix -> LCD classic arrangement of electrodes in the form of lattice. The light is generated globally and changes the light matrix.
"Active matrix -> TFT (Thin Film Transistor) array emitting transistor FET. Each cell has its own light. The array generates light. Therefore has better response time and increased resolution and contrast. Structure and function of a plasma screen: The screens or displays of the type called "plasma" are flat, lightweight, with a layer or substrate surface that covers millions of tiny cells or "bubbles".
- Well oddly enough, and unlike LCDs, work similar to traditional CRT televisions. At least on the issue of the matches that generate light.
- In plasma TVs start from glass panels and divided into cells containing a mixture of noble gases when excited by electricity, becomes plasma and matches begin to emit light
- This is the main difference with LCD TVs. In the case of plasmas, the light containing them, not from elsewhere, as with the backlight of LCD TVs Components graphics cards:
-GPU: Graphics Coprocessor
-Video Memory
-Converter RAMDAC (Random Access Memory Digital-to-Analog Converter)