Arduino 數位I/O的標準測試程式，利用讀取輸入的數位訊來控制輸出的數位訊號，文中有詳細的描述與介紹說明。-Arduino digital I/O of the standard test program, using the digital input reader inquiry to control the digital output signal, the text has a detailed descr iption of the descr iption and intro