ByRois Golan 2020-01-20 1402
In the common DVI interface, the DVI-D interface can only receive digital signals. There are only 24 pins in 3 rows and 8 columns on the interface, of which one pin in the upper right corner is empty. Not compatible with analog signals.
DVI-I interface is compatible with both analog and digital signals. Fortunately, being compatible with analog signals does not mean that the analog signal interface D-Sub interface can be connected to the DVI-I interface, but must be used through a adapter. Generally, graphics cards with this interface will have related adapters.
When buying LCD monitors, people may find that there are 18-pin and 24-pin DVI. Some people say that 18-pin DVI is a simplified version, which is much worse than 24-pin DVI, while others say that 24-pin LCD means that there is no difference between the two. What is the truth?
As mentioned earlier, in the different specifications of DVI, it is divided into two types: dual channel and single channel. In fact, these 18 stitches and 24 stitches are the difference between these two types. The 18-pin DVI belongs to a single channel, while the 24-pin DVI belongs to a dual channel, that is to say, the 18-pin DVI transmission rate is only half of that of the 24-pin 165MHz. In the screen display, the resolution of the single-channel DVI is exactly the same as that of the dual-channel, but the refresh rate is only about half of that of the dual-channel, which will lead to the decline of the display quality. Generally speaking, the maximum refresh rate of the single-channel DVI interface can only be supported to 1920*1080*60hz or 1600mm 1200Hz 60hz, that is, the normal display of the existing 23-inch wide screen display and 20-inch ordinary scale display. No matter how high it is, it will cause a decline in the display effect.
Is it impossible to buy an LCD with 18-pin DVI interface? The answer is, of course, no. At present, most of the monitors people use are less than 20 inches in size, which is not exactly a large-screen liquid crystal display. The standard resolution of these monitors is within the range of 18-pin DVI. Unless you buy a 23-inch large-screen liquid crystal display, there is no need to worry too much about 18-pin or 24-pin trouble.
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