单片机,按键一次,4灯从左向右依次亮,按键两次,4灯从右向左亮,谢谢_百...答:电路图:程序如下:include <reg51.h> define uint unsigned int define uchar unsigned char uchar code table_1[]={ 0xf7,0xfb,0xfd,0xfe};uchar code table_2[]={ 0xfe,0xfd,0xfb,0xf7};sbit key=P2^0;uint num;//延时子程序 void relay(uint xm){ uint i,j;for(i=xm;i>0...