C语言实现数字时钟的程序

1、求89c52单片机 c语言实现数字时钟程序悬赏分：0 - 解决时间：2009-8-30 16:12 希望朋友们帮忙，给一下stc89c52单片机 c语言实现数字时钟的程序，初学单片机，请多关照 提问者： 爱在9黎明1971 - 一级最佳答案#include #include #define rest p3_4#define sclk p3_7#define data p3_6 unsigned char code displaycode=0xc0,0xf9,0xa4,0xb0,0x99, 0x92,0x82,0xf8,0x80,0x90;unsigned char code controlad

2、dress=0x80,0x82,0x84,0x86,0x88, 0x8a,0x8c,0x8e,0x90,0xbe;unsigned char hour,minute,second;unsigned char day,month,week,year;unsigned char clockhour,clockminute;unsigned int num;unsigned char select,oneminute;bit bdata modeselect;void delay();void writetime();void display(unsigned char temp,unsigned

3、char mode);void sound() while(num=60) minute+; second=0; if(minute=60) hour+; minute=0; if(hour=24) hour=0;void interrupt1()interrupt 2 using 3 oneminute=second-1; switch(select) case 4: hour+; if(hour=24) hour=0; break; case 5: minute+; if(minute=60) minute=0; break; case 6: second+; if(second=60)

4、second=0; break; case 2: clockhour+; if(clockhour=24) clockhour=0; break; case 3: clockminute+; if(clockminute=60) clockminute=0; break; default: modeselect=0; et2=!et2; break; void timer1()interrupt 3 using 3 if(select) if(second=oneminute) select=0; tr1=0; void timer2()interrupt 5 using 3 sound();

5、 tf2=0; if(minute!=clockminute|hour!=clockhour) tr2=0;void delay() unsigned char i=255; while(-i) ; void display(unsigned char temp,unsigned char mode) if(temp=4|temp=2) p0=0; else p0=1; if(mode) p1=displaycodehour/10; else p1=displaycodeclockhour/10; delay(); if(temp=4|temp=2) p0=0; else p0=2; if(m

6、ode) p1=displaycodehour%10; else p1=displaycodeclockhour%10; delay(); if(temp=1|temp=2|temp=3) p0=0; else p0=4; p1=0xbf; delay(); if(temp=5|temp=3) p0=0; else p0=8; if(mode) p1=displaycodeminute/10; else p1=displaycodeclockminute/10; delay(); if(temp=5|temp=3) p0=0; else p0=16; if(mode) p1=displayco

7、deminute%10; else p1=displaycodeclockminute%10; delay(); if(temp=1|temp=2|temp=3) p0=0; else p0=32; p1=0xbf; delay(); if(temp=6) p0=0; else p0=64; if(mode) p1=displaycodesecond/10; else p1=displaycode0; delay(); if(temp=6) p0=0; else p0=128; if(mode) if(et2) p1=displaycodesecond%10+128; else p1=disp

8、laycodesecond%10; else p1=displaycode0; delay();void write(unsigned char bdata) unsigned char i=8; for(;i0;i-) if(bdata&0x01) data=1; else data=0; sclk=1; sclk=0; bdata=1; void writedata(unsigned char address,bdata) rest=0; sclk=0; _nop_(); rest=1; write(address); write(bdata); rest=0;unsigned char

9、read(unsigned char bdata) unsigned char tdata=0,i=8; rest=0; sclk=0; _nop_(); rest=1; write(bdata); for(;i0;i-) tdata=1; if(data) tdata=tdata|0x80; else tdata|=0x00; sclk=1; sclk=0; return tdata;void writetime() unsigned char i,time,temp3; temp0=second; temp1=minute; temp2=hour; for(i=0;i3;i+) time=

10、tempi%10; time|=(tempi/10)4; writedata(controladdressi,time); void writeyear() unsigned char i,year0,temp4; temp0=day; temp1=month; temp2=week; temp3=year; for(i=0;i4;i+) year0=tempi%10; year0|=(tempi/10)4; writedata(controladdressi+3,year0); void readtime() unsigned char i,time,temp3; for(i=0;i4)*1

11、0; tempi=time; second=temp0; minute=temp1; hour=temp2;void readyear() unsigned char i,year0,temp4; for(i=0;i4)*10; tempi=year0; day=temp0; month=temp1; week=temp2; year=temp3;void main() initial(); sound(); writedata(0x8e,0x00); writedata(0x84,0x12); writedata(0x8f,0x00); readtime(); writeyear(); re

12、adyear(); while(1) switch(select) case 0: display(0,1); break; case 1: if(num=2500) display(1,0); else display(0,0); break; case 2: if(num=2500) display(2,0); else display(0,0); break; case 3: if(num=2500) display(3,0); else display(0,0); break; case 4: if(num=2500) display(4,1); else display(0,1); break; case 5: if(num=2500) display(5,1); else display(0,1); break; case 6: if(num=2500) display(6,1); else display(0,1); break; case 7: writetime(); writetime(); writetime(); s