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單片機源程序如下:
#include<reg51.h>
unsigned char table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f};
unsigned int k,t,m,n;
unsigned int dat_count,dat_count1,w;
sbit led=P1^4;
sbit speaker=P1^5;
sbit js=P1^0;
sbit z=P1^1;
sbit j=P1^2;
sbit q=P1^3;
delay(unsigned char time)
{
unsigned char i,j;
for(i=0;i<time;i++)
for(j=0;j<120;j++);
}
void INT0_init(void)
{
IT0=1;
EA=1;
EX0=1;
}
void INT1_init(void)
{
IT1=1;
EA=1;
EX1=1;
}
void display()
{
unsigned int m, shi, ge;
shi=dat_count/10;
ge=dat_count%10;
for(m=100;m>0;m--)
{
P0=table[shi];
P2=0x02;
delay(1);
P2=0xff;
P0=table[ge];
P2=0x01;
delay(1);
P2=0xff;
}
}
void display1()
{
unsigned int m1,shi1,ge1;
if(z==0) dat_count1=dat_count1+1;
if(j==0) dat_count1=dat_count1-1;
if(q==0) dat_count1=0;
shi1=dat_count1/10;
ge1=dat_count1%10;
for(m1=200;m1>0;m1--)
{
P0=table[shi1];
P2=0x02;
delay(2);
P2=0xff;
P0=table[ge1];
P2=0x01;
delay(2);
P2=0xff;
}
}
main()
{
INT0_init();
INT1_init();
dat_count1=0;
while(1)
{
if(js==0)
{
display1();
}
else
{
if(dat_count>=dat_count1)
{
led=0;
speaker=0;
}
else
{
led=1;
speaker=1;
}
display();
}
}
}
void Init0() interrupt 0 using 0
{
EX0=0;
dat_count++;
EX0=1;
}
void Init1() interrupt 2 using 1
{
EX1=0;
dat_count--;
EX1=1;
}
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