LED display asynchronous control system, also known as LED display offline control system or offline card, is mainly used to display various texts, symbols, graphics or animations. The working principle of this system is that the screen display information is first edited by the computer, and then pre-installed into the frame memory of the LED display through the RS232/485 serial port. After that, the LED display screen will display and play these pre-stored contents screen by screen, repeating the cycle, showing a rich and colorful display method.
The main features of the LED display asynchronous control system include simple operation, low price and wide range of use. Among them, the simple asynchronous control system can only display digital clock, text, special characters, etc.; while the graphic and text asynchronous control system has more powerful functions, such as supporting analog clock display, countdown, picture, table and animation display, and has timing On/off, temperature control, humidity control and other functions.
In general, the LED display asynchronous control system provides rich display content and diverse display methods for LED displays, and is widely used in various occasions where information needs to be displayed.