#include<reg51.h>
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(unsigned int num)
{
int x,y;
for(x=num;x>0;x--)
for(y=110;y>0;y--)
{
;
}
}
void main()
{
P1=0xff;
while(1)
{
led1=0;
led2=1;
delay(1000);
led1=1;
led2=0;
delay(1000);
led2=1;
led3=0;
delay(1000);
led3=1;
led4=0;
delay(1000);
led4=1;
led5=0;
delay(1000);
led5=1;
led6=0;
delay(1000);
led6=1;
led7=0;
delay(1000);
led7=1;
led8=0;
delay(1000);
led8=1;
}
}
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