1 #include<reg52.h>
2 #define uchar unsigned char
3 #define uint unsigned int
4 uint i; 5 uint h=0,m=0,f=0,t4ms=0; 6 void init() 7 { 8 TMOD = 0x01; 9 TH0 = (65535-50000)/256; 10 TL0 = (65535-50000)%256; 11 ET0 = 1; 12 EA = 1; 13 TR0 = 1; 14 } 15 void delay(uint j){ 16 while(j--); 17 } 18 uchar duan[10]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; 19 uint wei[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; 20 void main() 21 { 22 init(); 23 while(1) 24 { 25 for(i=0;i<8;i++) 26 { 27 P1=wei[i]; 28 switch(i) 29 { 30 case 0:P2=duan[h/10];break; 31 case 1:P2=duan[h%10];break; 32 case 2:P2=0x40;break; 33 case 3:P2=duan[f/10];break; 34 case 4:P2=duan[f%10];break; 35 case 5:P2=0x40;break; 36 case 6:P2=duan[m/10];break; 37 case 7:P2=duan[m%10];break; 38 default:break; 39 } 40 delay(30); 41 } 42 } 43 } 44 void ljj() interrupt 1
45 { 46 t4ms++; 47 if(t4ms==13) 48 { 49 t4ms=0; 50 m++; 51 if(m==60) 52 { 53 m=0; 54 f++; 55 if(f==60) 56 { 57 f=0; 58 h++; 59 if(h==12) 60 { 61 h=0; 62 } 63 } 64 } 65 } 66
67 } 68
