LED Display Control System - Asynchronous Control
LED display asynchronous control system, also known as LED display offline control system or offline card. The main control PC will display the information to be displayed and various control commands through the serial communication method into the LED display screen control card. The LED display screen contains the microcontroller and memory in the control card, and the screen control card stores the information. , Then according to the command displayed on the LED display.
Mainly used to display a variety of text, symbols and graphics or animation. The screen display information is edited by the computer, pre-input into the frame memory of the LED display via the RS232/485 serial port, and then displayed on a screen-by-screen basis. The display is colorful and varied. Generally, there is no multi-grayscale display capability, which is mainly used for displaying text and simple graphic information, and can be multi-screen networked.
Its main features are: simple operation, low price, and a wide range of use. LED display simple asynchronous control system can only display digital clock, text, special characters. In addition to the functions of a simple control system, the LED display graphic and textual asynchronous control system has the greatest feature of being able to control the display screen content in different regions. Support analog clock display, countdown, pictures, forms and animation display. With timer switch, temperature control, humidity control and other functions.
