VGA Display PVC Jacket 1500mm Converter Adapter Cable

VGA Converter Adapter Cable 1.5 M VGA Display Cable Computer Monitor Cable

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About VGA

The information processed by the graphics card is ultimately output to the monitor. The output interface of the graphics card is the bridge between the computer and the monitor. It is responsible for outputting the corresponding image signal to the monitor. Due to design and manufacturing reasons, CRT monitors can only accept analog signal input, which requires the graphics card to output analog signals. The VGA interface is the interface that outputs analog signals on the graphics card, and the VGA (Video Graphics Array) interface is also called the D-Sub interface. Although LCD monitors can directly receive digital signals, many low-end products use the VGA interface in order to match the VGA interface graphics card. The VGA interface is a D-type interface. There are 15 pins on the top, divided into three rows, five in each row.

The VGA interface is the most widely used interface type on graphics cards, and most graphics cards have this interface. The port has one male and one femaletwo maletwo femaleclass

The VGA interface is a D-type interface with a total of 15 pinholes, divided into three rows of five. Among them, in addition to 2 NC (Not Connect) signals, 3 display data buses and 5 GND signals, more important are 3 RGB color component signals and 2 scan synchronization signals HSYNC and VSYNC pins. The color component in the VGA interface adopts RS343 level standard. The peak-to-peak voltage of the RS343 level standard is 1V. The VGA interface is the most widely used interface type on graphics cards, and most graphics cards have this type of interface. Some graphics cards that do not have a VGA interface but have a DVI (Digital Visual Interface) interface can also convert the DVI interface to a VGA interface through a simple adapter. Usually a graphics card without a VGA interface will come with such an adapter. .

Nowadays, most computers and external display devices are connected through an analog VGA interface. The digitally generated display image information inside the computer is converted into R, G, and B primary color signals and lines by the digital/analog converter in the graphics card Field synchronization signal, the signal is transmitted to the display device through the cable. For an analog display device, such as an analog CRT display, the signal is directly sent to the corresponding processing circuit to drive and control the kinescope to generate an image. For digital display devices such as LCD and DLP, the corresponding A/D (analog/digital) converter needs to be configured in the display device to convert the analog signal into a digital signal. After D/A and A/D2 conversions, it inevitably caused some loss of image details. VGA interface is no exception for CRT monitors, but it is used to connect display devices such as liquid crystals. The image loss during the conversion process will slightly reduce the display effect.

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