VGA interfaces that is Video Graphics Array interfaces, also called D-Sub interface. It is an standard of PC display using analog signals put forward by IBM in 1987. This standard has been implemented for 20 years, is one of the most common interfaces. VGA signal is the analog signal that is composed of R, G, B three primary color and Horizontal (H), Vertical (V) synchronizing signal, that is transmitted into the display devices by VGA.