In industrial computer users, multi-screen synchronous display or asynchronous display is a very common phenomenon. In order to achieve large screen display, it is necessary to analyze and explain from the following basic points. Generally speaking, the display interfaces we are familiar with include VGA, DVI, HDMI and DP interfaces, and the corresponding display devices cover liquid crystal displays (VGA interface) and high-definition video displays or digital signal displays (DVI, HDMI or DP interface).

In practical applications, to achieve synchronous multi-display, that is, copy the screen display, that is, all the displayed pictures are the same. For example, there are four monitors, requiring the four pictures to be exactly the same, how to set it? First, connect the industrial display according to the corresponding interface. Then, in the interface of the industrial computer system, through the shortcut display setting, the following screen will appear (because there is only one display here, so it cannot fully demonstrate the operation mode). However, when two or more monitors are connected, the option to set copy and extend modes appears. Select Copy display to achieve exactly the same two screens. Select the extended display is asynchronous display, that is, each screen shows a different picture.