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C51程序：
＃i nclude <reg51.h>
sbit gate11=P3^0;
sbit gate12=P3^1;
#define unit unsigned int
#define uchar unsigned char
uchar data BUFFER[]={0,0,0,0,1,1,7};
uchar data M[]={31,28,31,30,31,30,31,31,30,31,30,31};
uchar code NUM1[] =
{
0x80,0x7F,0xC0,0xFF,0x40,0x90,0x40,0x8C, // -0-
0x40,0x82,0xC0,0xFF,0x80,0x7F,0x00,0x00,
0x00,0x00,0x00,0x81,0x80,0x81,0xC0,0xFF, // -1-
0xC0,0xFF,0x00,0x80,0x00,0x80,0x00,0x00,
0x80,0xE0,0xC0,0xF0,0x40,0x98,0x40,0x8C, // -2-
0x40,0x86,0xC0,0xC3,0x80,0xC1,0x00,0x00,
0x80,0x40,0xC0,0xC0,0x40,0x84,0x40,0x84, // -3-
0x40,0x84,0xC0,0xFF,0x80,0x7B,0x00,0x00,
0x00,0x0C,0x00,0x0E,0x00,0x0B,0x80,0x89, // -4-
0xC0,0xFF,0xC0,0xFF,0x00,0x88,0x00,0x00,
0xC0,0x47,0xC0,0xC7,0x40,0x84,0x40,0x84, // -5-
0x40,0x8C,0x40,0xFC,0x40,0x78,0x00,0x00,
0x00,0x7F,0x80,0xFF,0xC0,0x84,0x40,0x84, // -6-
0x40,0x84,0x00,0xFC,0x00,0x78,0x00,0x00,
0xC0,0x00,0xC0,0x00,0x40,0xF0,0x40,0xF8, // -7-
0x40,0x0C,0xC0,0x07,0xC0,0x03,0x00,0x00,
0x80,0x7B,0xC0,0xFF,0x40,0x84,0x40,0x84, // -8-
0x40,0x84,0xC0,0xFF,0x80,0x7B,0x00,0x00,
0x80,0x03,0xC0,0x87,0x40,0x84,0x40,0x84, // -9-
0x40,0xC4,0xC0,0x7F,0x80,0x3F,0x00,0x00,
0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x63, // -:-
0x00,0x63,0x00,0x00,0x00,0x00,0x00,0x00,
};
uchar code NUM2[]=
{
0x00,0x00,0x7f,0x80,0xff,0xc0,0x82,0x40, // -0-
0x8c,0x40,0x90,0x40,0xff,0xc0,0x7f,0x80,
0x00,0x00,0x00,0x00,0x20,0x40,0x60,0x40, // -1-
0xff,0xc0,0xff,0xc0,0x00,0x40,0x00,0x40,
0x00,0x00,0x41,0xc0,0xc3,0xc0,0x86,0x40, // -2-
0x8c,0x40,0x98,0x40,0xf0,0xc0,0x60,0xc0,
0x00,0x00,0x40,0x80,0xc0,0xc0,0x88,0x40, // -3-
0x88,0x40,0x88,0x40,0xff,0xc0,0x77,0x80,
0x00,0x00,0x0c,0x00,0x1c,0x00,0x34,0x00, // -4-
0x64,0x40,0xff,0xc0,0xff,0xc0,0x04,0x40,
0x00,0x00,0xf8,0x80,0xf8,0xc0,0x88,0x40, // -5-
0x88,0x40,0x8c,0x40,0x8f,0xc0,0x87,0x80,
0x00,0x00,0x3f,0x80,0x7f,0xc0,0xc8,0x40, // -6-
0x88,0x40,0x88,0x40,0x0f,0xc0,0x07,0x80,
0x00,0x00,0xc0,0x00,0xc0,0x00,0x83,0xc0, // -7-
0x87,0xc0,0x8c,0x00,0xf8,0x00,0xf0,0x00,
0x00,0x00,0x77,0x80,0xff,0xc0,0x88,0x40, // -8-
0x88,0x40,0x88,0x40,0xff,0xc0,0x77,0x80,
0x00,0x00,0x70,0x00,0xf8,0x40,0x88,0x40, // -9-
0x88,0x40,0x88,0xc0,0xff,0x80,0x7f,0x00,
0x00,0x00,0x00,0xc0,0x01,0x80,0x03,0x00, // -/-
0x06,0x00,0x0c,0x00,0x18,0x00,0x30,0x00,
};
unit disp1,disp2,key1,key2;
unit ii,jj;
unit i,sw,xz;
void Delay(unit ms){
ms=ms*3;
while(--ms);
}
void num_led(int kk, int tt)
{
int jj;
for(jj=0;jj<8;jj++){
gate11=key1; gate12=key2;
P2=~NUM1[kk+jj*2];P1=~NUM1[kk+1+jj*2];
Delay(20);
P1=0xff;P2=0xff;
gate11=key2; gate12=key1;
P2=~NUM2[tt+15-jj*2];P1=~NUM2[tt+14-jj*2];
Delay(20);
P1=0xff;P2=0xff;
}
}
void display_clock(void)
{
key1=!key1;key2=!key2;
disp1=BUFFER[3]/10;disp2=BUFFER[4]-(BUFFER[4]/10)*10;
ii=disp1*16;jj=disp2*16;
num_led(ii,jj);
P2=0xff;P1=0xff;Delay(60);
disp1=BUFFER[3]-disp1*10;disp2=BUFFER[4]/10;
ii=disp1*16;jj=disp2*16;
num_led(ii,jj);
P2=0xff;P1=0xff;Delay(60);
ii=160;jj=160;
num_led(ii,jj);
P2=0xff;P1=0xff;Delay(60);
disp1=BUFFER[2]/10;disp2=BUFFER[5]-(BUFFER[5]/10)*10;
ii=disp1*16;jj=disp2*16;
num_led(ii,jj);
P2=0xff;P1=0xff;Delay(60);
disp1=BUFFER[2]-disp1*10;disp2=BUFFER[5]/10;
ii=disp1*16;jj=disp2*16;
num_led(ii,jj);
P2=0xff;P1=0xff;Delay(60);
ii=160;jj=160;
num_led(ii,jj);
P2=0xff;P1=0xff;Delay(60);
disp1=BUFFER[1]/10;disp2=BUFFER[6]-(BUFFER[6]/10)*10;
ii=disp1*16;jj=disp2*16;
num_led(ii,jj);
P2=0xff;P1=0xff;Delay(60);
disp1=BUFFER[1]-disp1*10;disp2=BUFFER[6]/10;
ii=disp1*16;jj=disp2*16;
num_led(ii,jj);
P2=0xff;P1=0xff;Delay(60);
}
void timer0(void) interrupt 1 using 1
{
TMOD=0x11;
TH0=-(5000/256);
TL0=-(5000%256);
TR0=1;
BUFFER[0]=BUFFER[0]+1;
if (BUFFER[6]%4==0) M[1]=M[1]+1;
if (BUFFER[0]>201+xz){
BUFFER[0]=0;
BUFFER[1]=BUFFER[1]+1;
if (BUFFER[1]==60){
BUFFER[1]=0;
BUFFER[2]=BUFFER[2]+1;
if (BUFFER[2]==60){
BUFFER[2]=0;
BUFFER[3]=BUFFER[3]+1;
if (BUFFER[3]==24){
BUFFER[3]=0;
BUFFER[4]=BUFFER[4]+1;
if (BUFFER[4]>M[BUFFER[5]-1]){
BUFFER[4]=1;
BUFFER[5]=BUFFER[5]+1;
if (BUFFER[5]>12){
BUFFER[5]=1;
BUFFER[6]=BUFFER[6]+1;
if(BUFFER[6]>99) {
BUFFER[6]=0;
M[1]=M[1]-1;
}
}
}
}
}
}
}
}
void intersvr0(void) interrupt 0
{
sw=1;
}
void main(void)
{
xz=8;
key1=1;key2=0;
EA=1;
IT0=1;EX0=1;
IT1=1;ET0=1;
TMOD=0x11;
TH0=-5000/256; TL0=-5000%256;
TR0=1;
for(;;){
Delay(10);
if(sw==1) {display_clock();sw=0;}
}
}
详细制作过程请到： 
http://hi.baidu.com/52_diy/blog