INVENTO MAX7219 4 in 1 dot matrix LED control LED display module + 2.2cm DuPont line 5P Power Supply Electronic Hobby Kit

Wiring instructions The module left as an input port to the output port on the right. The control of a single module, simply input port to the CPU Multiple modules cascade input termination CPU, 2 output termination module, a module of the input of the input terminal, the output terminal of the first two modules of the first three modules, and so on ...51 MCU, for example: VCC ? 5V GND ? GND DIN ? P22 CS ? P21 CLK ? P20 Package Include 1 x Dot Matrix Display Module