What is the full form of VGA
VGA: Video Graphics Array
VGA stands for Video Graphics Array. It is a display hardware developed by IBM in 1987. It was first introduced with IBM PS/2 line of computers. It provides a resolution of 640x480 pixels and a refresh rate of 60 Hz.
VGA is referred as an array instead of an adopter because it was implemented from the start as a single chip (ASIC). It uses analog signals rather than digital signals.
The original VGA has the following specification:
Shape and Size
A VGA connector is shaped like a trapezoid and it has 15 pins. If you have a old monitor designed for the older standards may not be able to work with Video Graphics Array standards.
The older VGAs provide a resolution of 640x480 pixels. After that version, many revisions have been introduced. The most common version of VGA is Super VGA (SVGA). It allows for resolutions greater than 640x480, such as 800x600 or 1024x768.