(完整版)基于51单片机的电子时钟设计与实现毕业设计

3 PCB原理图与仿真图

3.1 PCB原理图

图3.1时钟PCB图

3.2仿真图

图3.2时钟仿真图

4 程序设计

#include \#define uchar unsigned char #define uint unsigned int

#define smplay P2 sbit sm1out=P0^0; sbit sm2out=P0^1; sbit sm3out=P0^2; sbit sm4out=P0^3; sbit speak=P0^4;

sbit addtime=P3^4; sbit subtime=P3^5; sbit sled1=P1^3; sbit sled2=P1^4; uchar

code tabsm[]={0x03,0x9F,0x25,0x0D,0x99,0x49,0x41,0x1F,0x01,0x09}; uchar

code tabds[]={0x02,0x9E,0x24,0x0C,0x98,0x48,0x40,0x1E,0x00,0x08}; uchar datamd,datamg,datahd,datahg; uchar ddatamd,ddatamg,ddatahd,ddatahg; uchar gethour,getmin; uchar secdata=0x00; uchar t1num=10; uchar t0num1=10; uchar t0num2=2; uchar fselect=0; bit flagplay; bit flagflash; bit flagspk=0; void dlysys() {

uchar i,j,k; for(i=0;i<50;i++) for(j=0;j<100;j++)

for(k=0;k<100;k++);

}

void dlyplay() {

uchar i,j; for(i=0;i<10;i++) for(j=0;j<100;j++);

}

void dlyint() {

uchar i,j; for(i=0;i<200;i++) for(j=0;j<200;j++);

}

void main() {

uchar chgi=0; uchar chkkey=10; P0=P1=P2=P3=0xff; dlysys();

datamd=9;