VGA connector on the video card

VGA (Video Graphics Array) port, also called D-Sub connector. Although the LCD display can directly receive digital signals, many low-end products to match the VGA interface card, thus using a VGA interface. VGA connector is a D-type interface, the above 15-pin space, divided into three rows, each row of five. VGA connector on the video card is the most widely used type of interface, the vast majority of graphics cards with such an interface.
Graphics are processed information will eventually be output to the monitor, video card output connector is a bridge between your computer and the monitor, which is responsible for the corresponding image to the monitor output signal. CRT monitor because the design and manufacture of reasons, can only receive analog signal input, which requires graphics can input analog signal. VGA connector on the graphics card is an analog signal output interface, VGA (Video Graphics Array) port, also called D-Sub connector. Although the LCD display can directly receive digital signals, many low-end products to match the VGA interface card, thus using a VGA interface. VGA connector is a D-type interface, the above 15-pin space, divided into three rows, each row of five. VGA connector on the video card is the most widely used type of interface, the vast majority of graphics cards with such an interface.
Most computer and external display devices are connected via analog VGA interface, digitally generated inside the computer display image information, the graphics in the digital / analog converter into R, G, B primary color signals and lines, field sync signal, the signal transmitted through the cable to the display device. The analog display device, such as an analog HDMI Adapter display, the signal is sent directly to the appropriate processing circuitry, the drive control tube to generate an image. As for LCD, DLP and other digital display devices, display devices must be configured to the corresponding A / D (analog / digital) converter, the analog signal into a digital signal. After D / A conversion and A/D2 times later, inevitably result in some loss of image detail. VGA interface used in CRT monitors is understandable, but it is used to connect the liquid crystal display device of the class, the conversion process will display an image loss decreased slightly.