https://www.arduino.cc/en/Tutorial/ShiftOut
https://learn.adafruit.com/adafruit-arduino-lesson-4-eight-leds?view=all
https://www.instructables.com/id/Make-a-24X6-LED-matrix/
下一个的SER是连接上一个的Q7'
https://www.arduino.cc/en/Tutorial/ShiftOut
https://learn.adafruit.com/adafruit-arduino-lesson-4-eight-leds?view=all
https://www.instructables.com/id/Make-a-24X6-LED-matrix/
下一个的SER是连接上一个的Q7'