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VGA terminal (Video Graphics Array (VGA) connector), other names include RGB terminal, D-sub 15, or mini D15, is a DE-15 with 3 rows of 15 pins.
VGA terminals are usually found in computer display cards, monitors and other devices. is used to send analog signals
D-sub only describes the connection structure, and does not define the role of the entire interface or all pins by itself.
The most common are DB25 and DE9. Typical applications on personal computers are VGA (DA15 female), parallel port (DB25 female), COM serial port (DE9 male), these interfaces are being used by DVI, HDMI, RJ45 Ethernet port and USB replaced.
After the popularity of personal computers, DE9 was misread as DB9. Over time, DB9 has become an alias for DE9. The same is true for D-subs with other pin numbers. Now DB9 is called relatively more.
VGA, using D-Sub 15 interface, there are 15 pin holes on it, divided into three rows, five in each row.
Due to design and manufacturing reasons, the CRT color display can only accept analog signal input. The most basic one contains 5 components of RGBHV (red, green, blue, line, and field). No matter what type of interface is used, its The signal contains at least the above five components.
The most common interface for most PC graphics cards is D-15, which is a D-shaped three-row 15-pin socket, some of which are useless, and the signal line used for connection is also vacant.
In addition to these five essential components, the most important thing is to add DDC data components to the color display after 1996, which is used to read the brand, model, production date, serial number of the color display recorded in the EPROM of the display. Number, index parameters and other information content to achieve the PnP (plug and play) function required by WINDOWS, almost all CRTs have this interface.
The VGA terminal (other names include D-sub 15, or mini D15) is a DE-15 with 3 rows of 15 pins.
VGA terminals are usually used in computer display cards, monitors and other equipment to transmit analog signals.