1.代码：
#include <reg52.h>
typedef unsigned int u16;
typedef unsigned char u8;
sbit led1 = P1^0;
sbit led2 = P1^1;
sbit led3 = P1^2;
sbit led4 = P1^3;
sbit led5 = P1^4;
sbit led6 = P1^5;
sbit led7 = P1^6;
sbit led8 = P1^7;
void delay(u16 num)
{
u16 x,y;
for(x=num; x>0; x--)
for(y=110; y>0; y--)
{
;//延时1ms
}
}
void main(void)
{
P1 = 0xff;//LED输出模式
while(1)
{
led1 = 0;
delay(500);
led1 = 1;
led2 = 0;
delay(500);
led1 = 1;
led2 = 0;
delay(500);
led2 = 1;
led3 = 0;
delay(500);
led3 = 1;
led4 = 0;
delay(500);
led4 = 1;
led5 = 0;
delay(500);
led5 = 1;
led6 = 0;
delay(500);
led6 = 1;
led7 = 0;
delay(500);
led7 = 1;
led8 = 0;
delay(500);
led8 = 1;
}
}
2.电路图：
