Terms 1

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Terms 1
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VGA

• VGA - Short for Video Graphics Array, VGA is a
  popular display standard developed by IBM and
  introduced in 1987 VGA provides 640 x 480
  resolution color display screens with a refresh
  rate of 60Hz and 16 colors displayed at a time.
  If the resolution is lowered to 320 x 200, 256
  colors can be displayed VGA capability is built
  into plug -in video cards, VGA chips, and
  monitors that can work with the VGA cards. Today
  VGA has been replaced by SVGA.

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SVGA

• Super Video Graphics Array or Super Vector
  Graphics Adapter (PC monitor display standard
  that allows resolution above 640 by 480 pixels
  and up to 16.2 million colors).
• This is the type of connector you will find for
  most typical PC monitors and some LCD screens

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VGA / SVGA
This is a S/VGA port.
This is a S/VGA connector.
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DVI

• Short for Digital Visual Interface, DVI is a
  digital connection used to connect devices such
  as projectors, TVs, etc.
• This is the type of connector you will find on
  modern Mac monitors, high-end LCDs, and HDTVs

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CRT

• Cathode Ray Tube
• A vacuum tube in which a hot cathode emits a beam
  of electrons that pass through a high voltage
  anode and are focused or deflected before hitting
  a phosphorescent screen.
• A vacuum tube in which a hot negatively charged
  electrode (the source of electrons) emits a beam
  of electrons that pass through a high voltage
  positively charged electrode (by which electrons
  leave) and are focused ordeflected before
  hitting a lighted screen.

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LCD

• Liquid Crystal Display
• A digital display that uses liquid crystal cells
  that change reflectivity in an applied electric
  field used for portable computer displays and
  watches phosphorescent etc.
• A digital display screen that uses liquid crystal
  to define the color contrastfor better
  visibility.

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LED

• LEDs are special diodes that emit light when
  connected in a circuit. They are frequently used
  as "pilot" lights in electronic appliances to
  indicate whether the circuit is closed or not.
• Traditional bulbs control current with heated
  filaments. LEDs are a solid-state device and do
  not use filaments. This makes LEDs very reliable
  with a long lifespan (typically 100,000 hours).
  LEDs have low power consumption and low heat
  output making them an ideal replacement for
  traditional bulbs. LEDs can be dimmed.

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OLED

• Organic light emitting diode (OLED) technology
  uses substances that emit red, green, blue or
  white light. Without any other source of
  illumination, OLED materials present bright,
  clear video and images that are easy to see at
  almost any angle.
• Prior to standardization, OLED technology was
  also referred to as OEL or Organic
  Electro-Luminescence. One of the great benefits
  of an OLED display over the traditional LCD
  displays found in computer displays is that OLED
  displays don't require a backlight to function.
  This means that they draw far less power and they
  can be used with small portable devices which
  have mostly been using monochrome low-resolution
  displays to conserve power. This will also mean
  that they will be able to last for long periods
  of time with the same amount of battery charge.

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Jaggies

• The stair-stepped or star like appearance of
  diagonal lines where there should be smooth
  lines.  This is caused in output devices, such as
  the monitor and printer, when there are not
  enough pixels in the image or on screen to
  represent them realistically, or not enough
  resolution. Jaggies often occur when a bit-mapped
  image is converted to a different resolution.
• Also called "stair-stepping" and "aliasing".

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Anti-aliasing

• A software program that rids a computer of
  jaggies by smoothing the jagged appearance of
  diagonal lines in a bitmapped image. The pixels
  that surround the edges of the line are changed
  to varying shades of gray or color in order to
  blend the sharp edge into the background.
• This technique is also called "dithering," but is
  usually known as anti-aliasing when applied to
  diagonal and curved lines.