Scheme 1: If there are two monitors, no other equipment is needed. You can look at your graphics card interface. As long as it is an independent graphics card, it is not too old. Generally, there are two or three video output interfaces. Each interface can be connected to a monitor, and the corresponding settings will automatically appear in the computer after connection. The specific method is very simple. I have liked it for a long time. For details, please refer to the topic of activating dual-head graphics card 1 host 2 display application. The simplest method can realize independent display of one machine and two screens, or joint display without adding peripherals. You can connect another monitor (or LCD TV) with S port with the S terminal on the host computer, and then you can set an extended display screen in the display properties. 1 and 2 can be displayed at the same time. In this case, you can realize: 1, and the two display screens independently display their own images (such as the first display window) 2. Two screens can display the same picture, just like mirror images. You can use a laptop computer to connect to a TV or monitor (or LCD TV) to do this experiment. As for the audio channel, it needs to be solved separately and cannot be divided independently. If there are more than two monitors, then first, the graphics card does not have so many interfaces, and second, the graphics card does not support more than two monitors. At this time, you need to take the following solutions. Scheme 2: Among the manufacturers selling monitors, we can see that many monitors are displaying the same content. What technology do they use? Depending on the scene, use a screen splitter or a screen splitter card. But this scheme is not the desired solution. Option 3: Add a graphics card, preferably a card. The premise is that the motherboard needs 1 or more graphics card slots! For example, a P45 motherboard in Gigabyte has three graphics card slots, which means six monitors can be connected at the same time. It is understood that the A card has more advantages than the N card in split-screen display, that is, it automatically splits the screen without dragging ~ Gigabyte GA-EP45- extremely fast view of detailed parameters >; & gt Scheme 4: Choose multi-screen card or multi-head graphics card. This scheme was improved at the suggestion of Mr. Dong Guo Kongming. . . If you need to display more screens, but there are fewer PCI slots, then you should make reasonable calculations when purchasing, and choose a multi-screen graphics card that supports more screens-the graphics card inserted in the PCI slot of the computer. At present, the common multi-screen graphics card can support 2 screens, 4 screens and 8 screens, which are basically the square of 2. The advantage of multi-screen display card is not only that it can enlarge and widen the working window size, but more importantly, it can realize more different working windows through a PC, which provides a broad field for your work. For example: large screen splicing (splicing cg animation, splicing dynamic video) projection wall; Public security, military, railway, transportation, aerospace, post and telecommunications, satellite launch and other command and dispatch systems; Graphic image editing, three-dimensional animation, multimedia design; Process control in industrial field; Securities trading, futures and bank information display; CAD/CAM design, typesetting and editing system, video image editing. Unique nine highlights: forbidden kingdom-West Silicon Valley, listing of Qixiang 9600GT. Key points of multi-screen card selection: 1 resolution: multi-screen card is a device that supports display and output, and resolution is also a very important technical performance index of multi-screen graphics card. Just like choosing an ordinary graphics card, it is enough to know the format type, quantity and resolution supported by the product, as well as the refresh rate and color in this case. 2 Multi-screen display control modes that multi-screen cards can support: At present, there are two general modes for driving multi-screen graphics cards. One is to directly use Windows 98/2000/XP and other operating systems to support multi-screen display. In this driving mode, each output port can be set with different resolution, which is more suitable for fields that need multi-task and multi-display windows. For example, another display mode of AutoCAD is called overlay display mode. In this mode, it is easier to realize a display window or multi-screen display of application programs, such as screen wall splicing, industrial process control configuration software display, web page design, text typesetting, securities and stock display and other fields. No matter what kind of display driving mode, the arrangement of display screen in application can't be fixed, so how to switch and adjust the operation mode is very important. Different manufacturers have different product designs. For example, the HYDRAVISION multi-screen control software provided by Appian company enables customers to conveniently control multi-window and multi-task display. 3 Output Interface Types of Multi-screen Cards In addition to conventional monitors, multi-screen graphics cards may also need to support video output devices such as televisions (such as Taiwan Province Video-UFO graphics cards with video output ports), so the types of input and output interfaces it supports are also very important. Common interfaces include VGA interface, DVI interface and video interface. 4 Multi-screen card expansion function Some multi-screen display cards have many accessories to enhance the function, which can make the function more powerful. So when shopping, you should choose according to your actual situation. NTSC/PAL/SECAM video capture chips are added to multi-screen cards, such as Jpro four-screen card of Appian company and PROMEDIA four-screen card of COLOGRAPHIC company, all of which have video capture chips. This option enables multi-screen card products to play external video source signals under the playing software provided by multi-screen cards, and play them in the form of windows on the display. 5 Multi-screen card support for 3D, OpenGL and other technologies At present, computer applications have entered the 3D era, and 3D functions are very common in ordinary graphics cards. However, the 2D card and 3D card of multi-screen graphics card are different, and some products without 3D function cannot realize 3D display function. Therefore, for some users who need 3D display, they must buy a multi-screen card with 3D display function, and of course the price will be much more expensive.