单片机电子时钟完整版（基于at89c51电子时钟论文，keil程序编写，professional仿真，pcb原理图）

#include<reg51.h> #define uchar unsigned char #define uint unsigned int #define delay_time 3 uchar k,dat[]={0,0,0,0,0,0,0,0}; uint tcount,t,u; uchar dat1[]={0,0,0,0,0,0,2,1}; uchar dat2[]={0,0,0,0,0,0,0,0}; uchar alarms[]={0,0,0,0,0,0,0,0}; uchar dis_bit[]={0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01}; unsigned char code SEG7[11]={0xC0,/*0*/ 0xF9,/*1*/ 0xA4,/*2*/ 0xB0,/*3*/ 0x99,/*4*/ 0x92,/*5*/ 0x82,/*6*/ 0xF8,/*7*/ 0x80,/*8*/ 0x90,/*9*/ 0xBF,/*-*/ }; sbit miaobiao1=P1^0; sbit tminute=P1^1; sbit thour=P1^2; sbit miaobiao2=P1^3; sbit alarm=P1^4; sbit P0_0=P0^0; sbit P1_5=P1^5; sbit P1_6=P1^6; sbit P1_7=P1^7; uchar ms=0; uchar flag=0; uchar sec=0; uchar minit=0; struct time{uchar second;uchar minute;uchar hour;}time1; uchar n,i; void delay(n) { while(n--) { for(i=120;i>0;i--); } } void modify(void) { EA=0; if(thour==0) { if(flag==0) { dat1[6]++;delay(280); if(dat1[6]>9) { dat1[6]=0;dat1[7]++;} else if((dat1[7]>1)&&(dat1[6]>3)) {dat1[7]=0; dat1[6]=0; } } if(flag==1) { alarms[6]++;delay(200); if(alarms[6]>9) { alarms[6]=0;alarms[7]++; if(alarms[7]>2) { alarms[7]=0; } } dat[6]=alarms[6]; dat[7]=alarms[7]; } } if(tminute==0) { if(flag==0) { dat1[3]++;delay(280); if(dat[3]>=9) { dat1[4]++;dat1[3]=0; if(dat1[4]>5) { dat1[4]=0; } } } if(flag==1) { alarms[3]++; delay(200); if(alarms[3]>9) { alarms[4]++;alarms[3]=0; if(alarms[4]>5) { alarms[4]=0; } } dat[3]=alarms[3]; dat[4]=alarms[4]; } } if(miaobiao1==0) { TR0=0;ET0=0;TR1=1;ET1=1; } if(miaobiao2==0) { TR0=1;ET0=1;TR1=0;ET1=0; dat2[0]=0; dat2[1]=0; dat2[3]=0; dat2[4]=0; dat2[6]=0; dat2[7]=0; ms=0; sec=0; minit=0; } if(P1_5==0) { TR0=0;ET0=0;TR1=0;ET1=0; } if(alarm==0) { TR0=0;ET0=0;TR1=0;ET1=0;flag=1; dat[0]=0; dat[1]=0; dat[2]=10; dat[3]=0; dat[4]=0; dat[5]=10; dat[6]=0; dat[7]=0; } EA=1; } void init(void) { TMOD = 0x11; TH0 = 0xDB; TL0 =0xFF; TH1=0xDB; TL1=0xFF; ET0 = 1; //10ms ET1=1; // TR1=1; TR0=1; tcount=0; ms=0; sec=0; minit=0; EA = 1; } void test(void) { for(k=0;k<8;k++) { P3=dis_bit[k];P2=SEG7[dat[k]]; delay(1);P3=0X00; } } void main() { init(); delay(10); while(1) { modify(); test(); } } void diplay() interrupt 1 { ET0=0; TR0=0; TH0 = 0xDB; TL0 = 0xff; TR0=1; tcount++; if(tcount==100) { time1.second++; tcount=0; dat1[0]=(time1.second)%10; dat1[1]=(time1.second)/10; } if(time1.second==60) { dat1[0]=0; dat1[1]=0; time1.second=0; time1.minute++; dat1[3]=(time1.minute)%10; dat1[4]=(time1.minute)/10; } if(time1.minute==60) { time1.minute=0; time1.hour++; dat1[6]=time1.hour%10; dat1[7]=time1.hour/10; } if(time1.hour>23) { time1.hour=0; } dat[5]=10; dat[2]=10; dat[0]=dat1[0]; dat[1]=dat1[1]; dat[3]=dat1[3]; dat[4]=dat1[4]; dat[6]=dat1[6]; dat[7]=dat1[7]; flag=0; P0=0x01; if((alarms[7]==dat1[7])&&(alarms[6]==dat1[6])&&(alarms[4]==dat1[4])&&(alarms[3]==dat1[3])&&(dat1[1]<1)) { P0=0x00; } ET0=1; } void time_2(void)interrupt 3 { EA=0; TR0=0; TH1=0xDB; TL1=0xFF; TR1=1; ms++; dat2[0]=ms%10; dat2[1]=ms/10; if(ms>=100) { ms=0; sec++; dat2[3]=sec%10; dat2[4]=sec/10; if(sec>=60) { sec=0; minit++; dat2[6]=minit%10; dat2[7]=minit/10; } } dat[5]=10; dat[2]=10; dat[0]=dat2[0]; dat[1]=dat2[1]; dat[3]=dat2[3]; dat[4]=dat2[4]; dat[6]=dat2[6]; dat[7]=dat2[7]; EA=1; }