With the indiscriminate classification of waste in Beijing and Shanghai, Shenzhen has also actively carried out the process of the regulation.
The garbage classification is so simple, then do you know the classification of the led display? Let’s take a look:
1, monochrome LED display: monochrome LED display refers to the display only one color of the luminescent material, mostly single red
2, dual-primary LED display: dual-primary LED display is generally composed of red and yellow-green luminescent materials.
3, three primary color LED display: three primary color LED display is divided into full color, true color display two, full color is composed of red, green, blue, and true color is composed of red, pure green, blue .
4, indoor LED display: indoor LED display area generally ranges from less than one square meter to more than ten square meters, the point density is high, in direct sunlight or ambient lighting, viewing distance is a few meters away, the screen body does not have sealing and waterproof ability. Indoor LED display screens are generally dominated by dot matrix modules, because the display brightness requirements for indoor use are not high, and the dot matrix module has a very high price;
5, outdoor LED display: outdoor LED display area generally from a few meters to tens or even hundreds of square meters, point density is relatively thin, mostly 1000-4000 points per square meter, luminous brightness is 3000-6000cd / square meter, the direction is different, The brightness requirements are also different. In direct sunlight, the viewing distance is several tens of meters, and there is a good wind, rain and lightning protection on the screen;
6, semi-outdoor LED display: semi-outdoor LED display between indoor and outdoor, high brightness, can be used outdoors in the sun, the screen is sealed, usually on the roof or window.
7. Intelligent LED display: The intelligent LED display does not need to be connected to the computer host. The LED display has a built-in CPU, which can save multiple images after power-off, and can be run independently from the computer. Some screens and clock chips automatically display the date and time. When you need to modify the display content, you can modify it by connecting the microcomputer through the RS-232 interface. The full-featured LED screen must be connected to the computer mainframe; the intelligent LED display is usually displayed in a small number of ways, such as pull-screen, pop-up, roll-up and roll-down.
8. Functional LED display: Various display modes. If professional software is used to produce the program, there are an infinite variety of display modes; the intelligent LED display is easy to operate, and the full-function LED display needs to be operated and maintained by a dedicated person. If you want to create an animation program, you need expertise.