In my experience. teaching students to use recursion has always been a difficult task. When it is first presented, students often react with a certain suspicion to the entire idea. as if they had just been exposed to some conjurer s trick ra

Keypad+7seg的使用，按下A鍵LED會有反應，要結束LED反應則可按C鍵 按下B鍵，雙七段顯示器先全亮後全暗，其餘作用已寫在程式註解上。-Keypad+7seg use, pressing the A key LED will react, react to the end of the LED can press the C key press the B button, dual seven-segment display full brightness after the fir

声光报警系统，单片机收到信号后做出光和声的反应，可用与防盗-Sound and light alarm system, microcontroller after receiving the signal light and sound to react, available and guard against theft