sy.c

能实现最简单的LEd显示控制

 #include <reg51.H>
sbit K1=P3^0;
sbit L1=P1^0;
sbit K2=P3^1;
sbit L2=P1^1;
sbit K3=P3^2;
sbit L3=P1^2;
void main(void)
{
while(1)
{
if(K1==0)
{
L1=0; //灯亮
}
else
{
L1=1; //灯灭
}
if(K2==0)
{L2=0;
}
else
{L2=1;
}
if(K3==0)
{L3=0;
}
else
{L3=1;
}
}
}