Short for Video Graphics Adapter or 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 60 Hz and 16 colors displayed at a time. If the resolution is lowered to 320 x 200, 256 colors are shown.
VGA utilizes analog signals, which means it is only capable of lower resolutions and lower quality display on screens.
VGA cable and connector
The picture above is an example of what the VGA/SVGA cable and connector will typically look like on the monitor, and on the back of the computer. The VGA standard has been replaced by SVGA and, although these cables and connectors are still referred to as VGA, they are technically SVGA.
What attaches or uses the VGA connector?
What has replaced the VGA connector?
It is not uncommon to still find the VGA cable and connector with today's computers, monitors, projectors, and TV's. This type of connector is becoming obsolete and being replaced by the DVI and HDMI cable and connector.
VGA pin functions
The illustration shows the 15-pin VGA connector, its pin assignments, and size dimensions. As can be seen, the VGA connector has 15 holes and each hole (pin) has its own function as explained in the below chart.
|4||Monitor ID 2|
|5||TTL Ground (monitor self-test)|
|6||Red Analog Ground|
|7||Green Analog Ground|
|8||Blue Analog Ground|
|9||Key (Plugged Hole)|
|11||Monitor ID 0|
|12||Monitor ID 1|
|15||Monitor ID 3|
A rectangle with two lines on the left and right side is a symbol used to represent the VGA connector on many computers and devices.