HD Cable 90 Degree Elbow VGA Male Female Video Extension Cable Extension Cable Cord 1080P Full HD Computer Monitor Cable 0.5M

Product description

Gold Plated 90 Degree VGA Cable, VGA Male to VGA Female Cable 1080P Full HD Computer Monitor Cable 0.5M

High definition VGA cable computer connects to TV connecting cable VGA 15P male/VGA 15P female 90 ° elbow connecting cable 0.5m/1m/1.5m;

VGA interface is the most widely used interface type on video cards, and most video cards have this interface. The port has one male and one female two male two female type

The VGA interface is a D-type interface, which has 15 pinholes in total and is divided into three rows of five. Among them, in addition to two NC (Not Connect) signals, three display data buses and five GND signals, three RGB color component signals and two HSYNC and VSYNC pins for scanning synchronization signals are more important. RS343 level standard is adopted for color components in VGA interface. The peak to peak voltage of RS343 level standard is 1V. VGA interface is the most widely used interface type on video cards, and most video cards have this interface. Some video cards without VGA interface but with DVI (Digital Visual Interface Digital Video Interface) interface can also be converted from DVI interface to VGA interface through a simple adapter. Generally, video cards without VGA interface will be provided with such adapter.

Nowadays, most computers and external display devices are connected through analog VGA interface. The display image information generated digitally inside the computer is converted into R, G, B primary color signals and line and field synchronization signals by the digital/analog converter in the graphics card, and the signals are transmitted to the display device through cables. For analog display equipment, such as analog CRT display, the signal is directly sent to the corresponding processing circuit to drive and control the picture tube to generate images. For LCD, DLP and other digital display devices, corresponding A/D (analog/digital) converters shall be configured in the display devices to convert analog signals into digital signals. After D/A and A/D2 conversion, some image details are inevitably lost. There is nothing wrong with the VGA interface applied to CRT displays, but if it is used to connect LCD and other display devices, the image loss during the conversion process will slightly reduce the display effect.

The specification table of VGA is as follows:

*256 KiB Video RAM

*16 color and 256 color modes

*262144 color plates in total (6 bits for red, green and blue, 2 ^ 6 ^ 3 in total)

*Selective 25.2 MHz or 28.3 MHz processing frequency

*Up to 720 horizontal pixels

*Up to 480 lines

*Update frequency up to 70 Hz

*Vertical Blanking interrupt (not supported by all cards)

*Plane mode: up to 16 colors (4 bit panel)

*Packet pixel mode: 256 colors (Mode 13h)

*The ability to scroll the picture smoothly

* Some “Raster Ops” support

* Barrel shifter

*Support split screen

VGA supports APA (All Points Addressable) mode that can control pixels independently, and also supports letter and number text mode. The standard graphic modes are as follows:

* 640 × four hundred and eighty × 16 colors

* 640 × three hundred and fifty × 16 colors

* 320 × two hundred × 16 colors

* 320 × two hundred × 256 colors (Mode 13h)

It also supports drawing resolutions of previous specifications in analog mode: EGA, CGA and MDA.

Applicable equipment

Connecting the output device with VGA interface to the display device is widely used in computers, monitors, projectors, high-definition televisions and other devices