51单片机8路流水灯! 用三个按键控制三个程序!每个按键对应一个程序...答:sbit key3=P1^2;uchar led1[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};uchar led2[]={0xe7,0xdb,0xbd,0x7e};bit flag;void delay(uchar a){ uchar i;while(a--)for(i=0;i<120;i++);} void prog1(void){ uchar i;while(flag){ P0=led1[i];i++;i%=8;delay(...