我来发一个C语言211351单片机时钟程序，希望5261能帮到你/* 程序功能：4102带定时闹铃时钟                                      *//*---------------------------------------------------------------*/#include <AT89X51.H>    /*包含器件1653配置文件*/#define uchar unsigned char#define uint unsigned intchar DATA_7SEG[10]={0xC0,0xF9,0xA4,0xB0,0x99,                    0x92,0x82,0xF8,0x80,0x90,};/*0~9的数码管段码*/uchar hour=0,min=0,sec=0;   /*时、分、秒单元清零*/uchar deda=0;        /*5mS计数单元清零*/ bit d_05s=0;               /*0.5秒标志*/uchar set=0;      /*模式设定标志*/uchar m=0;uchar flag=0;      /*RAM掉电标志*/void delay(uint k);     /*延时?函数*/void conv();         /*走时单元转换*/void disp();      /*走时时间显示?函数*//*------------------------走时?函数部分 ----------------------*//*定时器T0  5mS初始化*/void init_timer(){TMOD=0x01;TH0=-(4800/256);TL0=-(4800%256);IE=0x82;TR0=1;}/*---------------------------------*//*5mS定时中断服务?函数*/void T0_srv(void) interrupt 1 {TH0=-(4800/256);TL0=-(4800%256);deda++;}                                                                                                   /*----------------------------------*//*时、分、秒单元及走时单元转换*/void conv()                                                   {                                          if(deda<=100)d_05s=0; else d_05s=1;if(deda>=200){sec++;deda=0;}if(sec==60){min++;sec=0;}if(min==60){hour++;min=0;}if(hour==24){hour=0;}}          /*------------------------ 显示?函数部分 ----------------------*//*走时时间显示?函数*/void disp(){P0=DATA_7SEG[hour/10];P2=0xf7;delay(1);P0=DATA_7SEG[hour%10];P2=0xfb;delay(1);if(d_05s==1){if(P2_2==0)P0_7=0;else P0_7=1;}delay(1);P0=DATA_7SEG[min/10];P2=0xfd;delay(1);P0=DATA_7SEG[min%10];P2=0xfe;delay(1);}/*---------------------- 调整时间?函数部分 -------------------*//*调整走时时间*/void set_time(){uchar m; if(P2_5==0)delay(1); if(P2_5==0)hour++; if(hour==24)hour=0; for(m=0;m<30;m++)  {  disp();  if(P2_2==0)P0_7=0;  else P0_7=1;  delay(1);  }   if(P2_6==0)delay(1); if(P2_6==0)min++; if(min==60)min=0; for(m=0;m<30;m++)  {  disp();   if(P2_2==0)P0_7=0;  else P0_7=1;  delay(1);  }}/*------------------ 按键扫描、延时等?函数部分-------------------*//*走时时间程序?函数*/void time()              {                       conv();    /* 走时单元转换?函数  */disp();    /* 走时时间显示?函数  */}              /*------------------------------------*//*扫描按键?函数*/void scan_key(){delay(1);if(P2_4==0)set++;if(set>=2)set=0;if(set==1)flag=0x55;      F0:if(P2_4==0)goto F0; /*按键未释放，在此等候*/}/*------------------------------*//*延时?函数*/void delay(uint k){uint i,j;for(i=0;i<k;i++){for(j=0;j<121;j++){;}}}/*----------------------- 主函数 ------------------------- *//*主函数*/void main(){                           init_timer();             /*定时器T0初始化*/        while(1)     /*无限循环*/ {if(P2_4==0)scan_key();   /*有按键，调用按键扫描?函数*/switch(set)      /*根据set键值散转*/{                         case 0:time();  break;    /*走时时间程序*/case 1:set_time();break;       /*走时时间调整*/default:break;     /*其它退�

��*/}                                    if(flag!=0x55)          /*判断掉电标志*/           {                 P0=0xc0; P2=0xc0; delay(100);      P2=0xff; delay(400);                                     }    }}

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