#include<reg52.h>
#define uchar unsigned char
sbit K1=P3^0; // 按下独立键盘S2正转
sbit K2=P3^1; // 按下独立键盘S3反转
sbit K3=P3^2; // 按下独立键盘S4停转
uchar code table[]={0xf1,0xf3,0xf2,0xf6,0xf4,0xfc,0xf8,0xf9};
uchar code table1[]={0xf9,0xf8,0xfc,0xf4,0xf6,0xf2,0xf3,0xf1};
void delay(uchar z)
{
uchar x,y;
for(x=z;x>0;x--)
for(y=120;y>0;y--);
}
void main()
{
uchar k,i;
P1=table[0];
while(1)
{
if(!K1)
delay(5);
if(!K1)
k=1;
if(!K2)
delay(5);
if(!K2)
k=2;
if(!K3)
delay(5);
if(!K3)
k=3;
if(k==1||k==2)
{
for(i=0;i<8;i++)
{
if(k==1) P1=table[i];
else P1=table1[i];
delay(20);
}
}
}
}
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