一款迷你的电子琴，工作之余的好伴,一款迷你的电子琴，工作之余的好伴 -this is the dian zi qing,this is the dian zi qing,this is the dian zi qing

420f5438的迷你电子琴程序 可弹奏电子琴音乐-420f5438 mini keyboard program

通过矩阵按键实现1,2,3,4,5,6,7,当有按键按下时,led会亮起,说明按键有效,同时发出声音(The 1,2,3,4,5,6,7 is implemented by a matrix button, and when the button is pressed, the LED will light up, indicating that the key is valid and the sound is made.)