VGA Connector Description

Computer monitors display graphics with the help of a VGA connector

Several devices must operate in tune for us to visually connect and interact with our computer system. Monitors, for example, display graphics through the computer with the help of a VGA connector.

Definition

VGA, or Video Graphics Array, is the display hardware within a computer that connects to the monitor via a three-row, 15-pin plug and socket referred to as the VGA connector.

Function

A VGA connector allows a computer monitor to receive and display a base level of pixels, or the most basic units of image components, typically at or around a value of 640 x 480 resolution. PC operating systems normally display in VGA when booted, before the graphics cards or hardware drivers switch on for more-advanced graphic functions.

Process

VGA connectors use a cable composed of five wires, designed to carry analog component RGBHV (red, green, blue, horizontal sync, vertical sync) video signals. These signals determine the display qualities of the graphics. The cable sends the signals by connecting the computer VGA output to the component video input of the monitor.

References

• PCMag.com: Definition of: VGA
• "Principles of Computer Hardware"; Alan Clements; Oxford University Press; 2006

Resources

• "How Computers Work"; Ron White; Que; 2007