电路很简单就不画图了，数码管的段是p0口，2个数码管位选分别是p2.5，p2.6

#include

sbit cs1=P2^5;

sbit cs2=P2^6;

sbit e=P2^7;

sbit beep=P0^4;

#define uchar unsigned char

uchar display_code[11]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x7f};

uchar display_data[8]={0,0,0x0a,0,0,0x0a,0,0};

uchar time[3]={0,0,0};

void delay()

{

uchar i;

for(i=250;i>0;i--);

}

void js()

{

time[2]++;

if(time[2]>59)

{

time[2]=0;

time[1]++;

if(time[1]>59)

{

time[1]=0;

time[0]++;

if(time[0]>23)

time[0]=0;

}

}

}

void zh()

{

display_data[6]=time[2]/10;

display_data[7]=time[2]%10;

display_data[3]=time[1]/10;

display_data[4]=time[1]%10;

display_data[0]=time[0]/10;

display_data[1]=time[0]%10;

}

void display()

{

uchar i,k;

k=0x80;

for(i=8;i>0;i--)

{

P0=0xff;

P0=display_code[display_data[i]];

e=0;

cs1=0;

e=1;

cs1=1;

P0=~k;

k=k>>1;

e=0;

cs2=0;

e=1;

cs2=1;

delay();

}

}

void shenying()

{

beep=0;

if(time[0]>0)

{

beep=1;

if(time[1]<5)

beep=0;

}

}

void main()

{

while(1)

{

uchar i;

for(i=0;i<250;i++)

{

display();

}

js();

zh();

}

}