用单片机点亮LED小灯

#include<reg52.h>
sbit LED = P0^0;
sbit P20 = P2^0;
sbit P21= P2^1;
sbit P22 = P2^2;
sbit P23 = P2^3;
sbit ENLED = P1^1;
void main()
{

ENLED = 0;
P23 = 1;
P22 = 1;
P21 = 1;
P20 = 0;

LED = 0;
while(1);
}

成品图