Simply put, an electronic display screen is composed of several combinable display units (unit display panels or unit display cabinets) forming the screen body, plus a set of appropriate controllers (main control board or control system). Therefore, various specifications of display panels (or unit cabinets) combined with controllers using different control technologies can form many types of LED display screens to meet different environments and display requirements.

　　An LED electronic display screen is made up of tens of thousands to hundreds of thousands of semiconductor light-emitting diode pixel points arranged evenly. Different materials can be used to manufacture LED pixel points of different colors. Currently, red, green, and yellow are widely used. The development of blue and pure green LEDs has reached a practical stage.

　　LED display screens can show changing numbers, text, graphics, and images; they can be used not only indoors but also outdoors, possessing advantages that projectors, video walls, and LCD screens cannot match.

　　The reason LED has received widespread attention and rapid development is inseparable from its inherent advantages. These advantages can be summarized as:

　　High brightness, low operating voltage, low power consumption, miniaturization, long lifespan, shock resistance, and stable performance. The development prospects of LEDs are extremely broad, moving towards higher brightness, better weather resistance, higher luminous density, more uniform light emission, reliability, and full color.

　　Electronic Display Screen Attention and Maintenance

　　1. Precautions for turning electronic display screens on and off:

　　1. Power-on sequence: When turning on the screen: power on the machine first, then turn on the screen. When turning off the screen: turn off the screen first, then power off the machine.

　　2. The interval time between turning the LED display screen on and off should be more than 5 minutes.

　　3. The electronic display screen can only be powered on after the computer has entered the engineering control software.

　　4. Avoid turning on the screen when it is fully white, as the system's inrush current is large at this time.

　　5. Avoid turning on the screen when it is in an uncontrolled state, as the system's inrush current is large at this time.

　　6. When the ambient temperature is too high or heat dissipation conditions are poor, avoid keeping the screen on for a long time.

　　7. If a very bright line appears on part of the LED display screen, turn off the screen promptly; it is not advisable to keep the screen on for a long time in this state.

　　8. If the power switch of the display screen frequently trips, check the screen body or replace the power switch in time.

　　9. Regularly check the firmness of the hanging parts of the electronic display screen. If there is any looseness, adjust, reinforce, or replace the hanging parts promptly.

　　10. Depending on the environment of the display screen body and control parts, prevent insect bites; if necessary, place rodent repellent.

　　2. Precautions for changes and modifications to the control part of the electronic display screen

　　1. The power lines (neutral and live) of the computer and control parts must not be reversed; they should be connected strictly according to the original positions. After connecting any peripherals,

　　test whether the casing is electrified.

　　2. When moving the computer or other control equipment, check for any looseness in the connection cables and control boards before powering on.

　　3. Do not arbitrarily change the position or length of communication cables or flat connection cables.

　　4. After moving, if short circuits, tripping, wire burning, smoke, or other abnormalities occur, do not repeatedly power on for testing; find and resolve the problem promptly.

　　Problem.

　　3. Precautions for software operation and use of electronic display screens

　　1. Software backup: WIN2003, WINXP, application programs, software installation programs, databases, etc. It is recommended to use "One-Key Restore" software for convenient operation.

　　2. Be proficient in installation methods, original data recovery, and backup.

　　3. Master the setting of control parameters and modification of preset basic data.

　　4. Be proficient in using the electronic display screen software, including operation and editing.

　　5. Regularly check for viruses and delete irrelevant data.

　　6. Non-professional personnel should not operate the software system.