Component video uses three RCA connections, Red, Blue and Green to send video signals. It carries visual data only, meaning that audio cables are still required. Hence, it is usually paired with stereo (red and white) RCA audio connections.
VGA VGA or Video Graphics Array is the most popular video connection between computers and monitors. It is used on computer video cards, projectors and set top boxes. A standard VGA connection has 15 pins and supports display resolution of 640*480 pixels, while enhanced version SVGA is allowed for resolution of 1024*768.