VGA (Video Graphics Array) is what we often call D-Sub interface. This interface is an analog signal and can only transmit video signals. The VGA interface has a total of 15 pins, divided into 3 rows with 5 holes in each row. Most graphics cards have this kind of interface. Therefore, it used to be the most widely used interface type on computers.
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The D-sub interface is the transmission of analog signals, and the higher the resolution of the display, the more blurred the picture will be. Generally, when the resolution of the analog signal exceeds 1280×1024, there will be obvious errors. At the same time, because it is analog information, its signal is extremely susceptible to interference. And can't communicate audio. When using the D-Sub interface to connect the device, the cable length should not exceed 10 meters, and pay attention to whether the connector is installed firmly, otherwise it may cause ghosting in the image.
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