#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
sbit led9=P0^0;
uchar table[]={0xfe,0xfd,0xfb,0xf7};//0100000
void delay(uint a)
{
while(a--);
}
void dian(void)
{
uchar i;
uint j;
j=512;//角度
while(j--)
{
for(i=0;i<4;i++)
{
P1=table[i];
delay(800000);//調速
}
}
}
void main(void)
{
if(led9==0)
{
dian();
}
}
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