数字时钟c语言程序.doc

本人为单片机初学者，这是本人制作的一个简单的数字时钟程序，程序比较繁琐，只适合初学者学习参考使用，因为程序都是一步步来的，没有跳跃。只要将此程序复制到keil，然后编译生成hex文件，连到单片机（实物）就可以直接显示了。希望对有些人有帮助#include/头文件#define uchar unsigned char#define uint unsigned int/宏定义uchar count;uint hour,minute,second;uint hour1=0,minute1=0;sbit dula=P26;sbit wela=P27;sbit key1=P30;sbit key2=P31;sbit key3=P32;sbit key4=P33;sbit key5=P34;sbit key6=P35;sbit key7=P36;sbit BEEP=P12;uchar code duan=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40;/0-9,横杆uchar code wei=0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f; /扫描void delay(uint z)/延时函数uchar x,y;for(x=z;x0;x-)for(y=110;y0;y-);void init()/初始化中断TMOD=0x10; /定时器1以方式1定时 TH1=(65536-50000)/256;TL1=(65536-50000)%256;EA=1;/总中断打开ET1=1;/打开定时中断TR1=1;/打开定时器void time1() interrupt 3TH1=(65536-50000)/256;TL1=(65536-50000)%256;count+;if(count=20)/1秒累加一次 count=0; second+; if(second=60) second=0;minute+; if(minute=60)minute=0;hour+; if(hour=24) hour=0; void display() P0=0xff;/消影wela=1;/位打开P0=wei0;/显示第一位wela=0;/锁存dula=1;/段打开P0=duanhour/10;/段赋值dula=0;/段锁存delay(10); P0=0xff;wela=1;P0=wei1;wela=0;dula=1;P0=duanhour%10;dula=0;delay(10);P0=0xff;wela=1;P0=wei2;wela=0;dula=1;P0=0x40;dula=0;delay(10);P0=0xff;wela=1;P0=wei3;wela=0;dula=1;P0=duanminute/10;dula=0;delay(10); P0=0xff;wela=1;P0=wei4;wela=0;dula=1;P0=duanminute%10;dula=0;delay(10); P0=0xff;wela=1;P0=wei5;wela=0;dula=1;P0=0x40;dula=0;delay(10); P0=0xff;wela=1;P0=wei6;wela=0;dula=1;P0=duansecond/10;dula=0;delay(10); P0=0xff;wela=1;P0=wei7;wela=0;dula=1;P0=duansecond%10;dula=0;delay(10);void key_scan()/按键+和-if(key1=0)delay(10);if(key1=0)if(hour23)hour+;elsehour=0; while(!key1);if(key3=0)delay(10);if(key3=0)if(minute59)minute+;elseminute=0; while(!key3);if(key5=0)delay(10);if(key5=0)if(second0)hour-;elsehour=23; while(!key2);if(key4=0)delay(10);if(key4=0)if(minute0)minute-;elseminute=59; while(!key4);if(key6=0)delay(10);if(key6=0)if(second0)second-;elsesecond=59; while(!key6);if(key7=0)/复位功能delay(10);if(key7=0) hour=0;minute=0;second=0; while(!key7);void zhengdianbaoshi()/整点报时（从50秒开始）if(hour=hour&minute=59&second50)BEEP=!BEEP; void naozhong()/闹钟七点半，就响30秒 if(hour=7&mi