单片机简单的电子琴程序(C语言的),需要用4*4按键控制,简单点就行,不需...答:unsigned char STH0;unsigned char STL0;unsigned int code tab[]={64021,64103,64260,64400,64524,64580,64684,64777,64820,64898,64968,65030,65058,65110,65157,65178};void main(void){ TMOD=0x01;ET0=1;EA=1;while(1){ P3=0xff; //将P3口取出 P3_4=0; //使P3_4为低电平,...