Dot matrix screen display principle

Time:2023-03-03

LED dot matrix display is to connect many wires into a linear matrix, and then connect a light emitting diode (LED) at each intersection point. The line is connected to the positive pole of the LED, and the line is connected to the negative pole of the LED. Transparent plastic packaging is added outside to form a large display screen.
But if we control so many wires manually, it will be too complex and easy to control errors. What should we do? Single-chip computer can help us do these complicated things. By writing programs to control, we can display Chinese characters at will.