Answer: A. Try to keep the entire display screen at the same level as the wall.
Answer analysis: When discussing the description of embedded installation, we can analyze each option one by one according to the specific content:
A. Try to keep the entire display screen at the same level as the wall: Embedded installation, as the name implies, is to embed the display screen into the wall or other structure so that its appearance blends in with the surrounding environment. To achieve this effect, it is crucial to ensure that the display screen is at the same level as the wall, so as to ensure the flatness and aesthetics of the installation. Therefore, this description is correct.
B. Generally use front maintenance display screen: Embedded installation, due to its special installation method, usually prefers to use rear maintenance or side maintenance display screens, because these methods can be maintained and repaired without destroying the overall appearance. Although the front maintenance display screen is easy to operate, it may destroy its overall embedding effect in embedded installation. Therefore, this description is inaccurate.
C. Good heat dissipation effect: Because the embedded installation display screen is embedded in the wall or other structure, its heat dissipation effect may be limited to a certain extent, especially if the installation space is relatively closed or poorly ventilated. Therefore, it cannot be said that embedded installation has good heat dissipation effect. This description needs to be determined according to the specific situation, but in this question, we can assume that it is not a universal advantage of embedded installation.
D. The display area must be smaller than the actual embedded wall area: The display area of the embedded display does not have to be smaller than the actual embedded wall area. In fact, the size of the display area depends on the specific design requirements and the size of the installation space. As long as the design is reasonable, the display area can be equal to or close to the area of the embedded wall. Therefore, this description is inaccurate.
In summary, the correct description of embedded installation is option A: Try to keep the entire display at the same level as the wall.