Video cards (also known as video adapters, graphic cards, display cards, display adapter, graphic boards, graphic adapters or frame buffers and even by word that is dedicated to the difference between integrated graphics and implementation) are nothing but expansion cards that generate feeding of output images to displays (just like computer monitors). Video cards are also known as graphic add-in-boards, popularly known by their abbreviation AIBs (Add in Boards).
Historically, these cards have been developed from the graphic display demand with increasing higher resolutions as well as color depths on computers that are IBM PC compatible.
MDA, HGC, CGA, PGC, VGA, MCGA< EGA, 8514, XGA or Tandy standards were brought in during the period of 1982 to 1990. These standards were highly supported by different hardware manufacturers.
All video cards, currently, are built with either NVIDIA sourced or AMD sources graphic chips. Most of these video cards allow various functions like accelerated rendering of 2D as well as 3D graphics, decoding of MPEG 2/MPEG 4, TV output, or the capacity to connect to various monitors at a time (multi monitor feature).