Differences between Windows 7 multiple monitors and multiple displays

Source: Internet
Author: User
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When a user is developing an application, it may need to have two screens. One screen is used to display the development interface and another screen to display the results of the test. In this way, users can avoid the hassle of switching between different interfaces. For this to happen, you can do this in Windows 7 with multiple monitors and multiple displays. Although they all can achieve this requirement, but multiple monitors and multiple display is not the same function, there are some important differences between them. The author through this article, is to tell you two questions. One is the difference between multiple monitors and multiple displays, and the second is the attention points in the process of configuring multiple monitors.

The difference between multiple monitors and multiple displays.

Multiple monitors and multiple displays have actually been supported since the 2000 version. However, according to the author's understanding, in the Windows7 version of the operating system has made some relatively large improvements. No matter from the performance, or from the display resolution has made considerable progress.

Multiple monitors are implemented by installing multiple Zhang Xianka. Users can install multiple Zhang Xianka and configure multiple monitors on the computer, and then extend the display to multiple monitors through the Windows operating system's multiple monitor display, and when implementing multiple monitors, users can choose to use either PCI or AGP video cards. These monitors are divided between the primary monitor and the secondary monitor. The primary monitor is the first monitor that is used after the operating system starts, such as the Operating system Login dialog box, which is displayed on the primary monitor. The user can also use this feature to determine which is the primary monitor. The video card that the primary monitor is connected to is the primary video card. Other monitors are secondary monitors that allow users to install multiple display cards on their computers as needed. If the motherboard hardware limitations are not considered, the 2003 operating system supports up to 9 secondary video cards, while the number of secondary video cards in Windows7 can reach 12 blocks. The operating system screen is displayed on the main monitor by default. If you want to display on the secondary monitor, you need to log on to the operating system for configuration implementation.

Multiple displays are not implemented by installing multiple Zhang Xianka. If a creating khaki may itself have two VGA display interface, can connect two monitors. And the majority of laptops can also be dual display. Because a laptop has an LCD monitor, it often has a display interface that can connect to the VGA monitor. In fact, the notebook does not have two Zhang Xianka, but through the same Zhang Xianka to achieve. Multiple-screen displays that are not implemented through multiple Zhang Xianka are called multiple displays. In addition, we need to pay attention to a false multiple display problem. Some so-called multiple displays, although they can extend the screen to more than one monitor, but the content displayed on each monitor is the same. That is to say, it only seems to repeat the same screen on multiple monitors. This has a certain gap with the multiple display we often say. So we call them fake multiple displays.

Because multiple monitors and multiple display in the implementation of different mechanisms, this determines that they are using the effect of a great difference. To sum up, there are three main differences.

One is that multiple displays cannot choose which is the primary monitor and which is the secondary monitor. If you take a notebook as an example, the LCD monitor is always the first primary monitor. For a desktop computer with a video card with multiple display interfaces, the monitor that is connected to the first monitor interface is the primary monitor. The second monitor interface of the video card becomes the primary monitor only if the first monitor interface has physical damage. The use of multiple monitors is different. Users can select the primary monitor as needed, such as the ability to set a better PCI video card as the primary monitor, and so on. So multiple display, its selectivity is relatively close.

The second is to show the effect is different. Multiple displays are shown by a Zhang Xianka, and multiple screens display different content. That is, multiple screen processing power is concentrated on the same creating card, it will bring a lot of pressure. When the performance of the graphics card is relatively high, such as three-dimensional game or advanced mapping, the second monitor will produce a card one card phenomenon. While the WINDOWS7 operating system has taken steps to improve the support mechanism for multiple displays, this hardware limitation is not obvious by the unilateral effort of the operating system. If the use of multiple monitors, because each monitor image is a separate network card to deal with, this will not occur.

The third is the number of support differences. This is primarily a hardware limitation. Because of the limited processing power of the graphics card, it is possible for this video card to have only two monitor interfaces. and multiple monitors, as long as the motherboard to this, you can have up to 9 or even 12 cards. There is also a big gap between the number of monitors.

So in the end is the use of multiple monitors or multiple display, system administrator needs the cost of deployment (multiple monitors need multiple separate video addresses and), Video card processing power (multiple monitor display is better than multiple display), the number of interfaces (Multiple display monitor interface number is less than multiple monitors) And so on, to see how the enterprise is suitable for the implementation of the way.

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