74HC595同数据相关的引脚可以分为三类： DS：串行数据输入，接单片机的某个数字I/O引脚。 Q0~Q7：8位并行数据输出，可以直接 ...

In this second article we will see a practical application of the daisy-chained shift registers. We want to use four 7-Segments LEDs controlled by the Arduino board. As you can imagine, that is ...