用89C2051的最简单的电子钟(含电路图及用C51编写的源程....doc

用89C2051的最简单的电子钟（含电路图及用C51编写的源程序清单）附：用C51编写的源程序清单（已由实验板运行通过）#include /*包含器件配置文件*/#define uchar unsigned char#define uint unsigned intchar DATA_7SEG10=0xC0,0xF9,0xA4,0xB0,0x99, 0x92,0x82,0xF8,0x80,0x90,;/*09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*/ uchar t_hour=0,t_min=0; /*闹时时、分单元清零*/bit d_05s=0; /*0.5秒标志*/bit o_f=0; /*闹时启/停标志*/uchar set=0;/*模式设定标志*/uchar m=0;uchar flag=0;/*RAM掉电标志*/void delay(uint k);/*延时子函数*/void conv();/*走时单元转换*/void p_out();/*判别闹时到否子函数*/void dirve();/*走时时间输出驱动子函数*/void t_dirve();/*闹时时间输出驱动子函数*/*闹时启/停子函数*/void time1_of()uchar m;if(P3_7=0)delay(1);if(P3_7=0)o_f=1;for(m=0;m30;m+)t_dirve();P1=DATA_7SEGt_min/10;P3=0xfd;delay(1);if(P3_1=0)if(o_f=1)P1_7=0;else P1_7=1;delay(1);if(P3_5=0)delay(1);if(P3_5=0)o_f=0;for(m=0;m=4)set=0;if(set=1)flag=0x55;F0:if(P3_4=0)goto F0;/*按键未释放，在此等候*/*延时子函数*/void delay(uint k)uint i,j;for(i=0;ik;i+)for(j=0;j121;j+);/*5mS定时中断服务子函数*/void zd(void) interrupt 1 TH0=-(4800/256);TL0=-(4800%256);deda+;/*调整走时时间*/void time_adj()uchar m;if(P3_5=0)delay(1);if(P3_5=0)hour+;if(hour=24)hour=0;for(m=0;m30;m+)dirve();if(P3_2=0)P1_7=0;else P1_7=1;delay(1);if(P3_7=0)delay(1);if(P3_7=0)min+;if(min=60)min=0;for(m=0;m30;m+)dirve();if(P3_2=0)P1_7=0;else P1_7=1;delay(1);/*调整闹时时间*/void time1_adj()uchar m;if(P3_5=0)delay(1);if(P3_5=0)t_hour+;if(t_hour=24)t_hour=0;for(m=0;m30;m+)t_dirve();if(P3_7=0)delay(1);if(P3_7=0)t_min+;if(t_min=60)t_min=0;for(m=0;m30;m+)t_dirve();/*时、分、秒单元及走时单元转换*/void conv()if(deda=200)sec+;deda=0;if(sec=60)min+;sec=0;if(min=60)hour+;min=0;if(hour=24)hour=0;/*走时时间输出驱动子函数*/void dirve()P1=DATA_7SEGhour/10;P3=0xf7;delay(1);P1=DATA_7SEGhour%10;P3=0xfb;delay(1);if(d_05s=1)if(P3_2=0)P1_7=0;else P1_7=1;delay(1);P1=DATA_7SEGmin/10;P3=0xfd;delay(1);if(o_f=1)if(P3_1=0)P1_7=0;else P1_7=1;delay(1);P1=DATA_7SEGmin%10;P3=0xfe;delay(1);/*闹时时间输出驱动子函数*/void t_dirve()P1=DATA_7SEGt_hour/10;P3=0xf7;delay(1);if(P3_3=0)P1_7=0;else P1_7=1;delay(1);P1=DATA_7SEGt_hour%10;P3=0xfb;delay(1);P1=DATA_7SEGt_min/10;P3=0xfd;delay(1);P1=DATA_7SEGt_min%10;P3=0xfe;delay(1);/*判别闹时到否子函数*/void p_out()if(o_f=1)if(t_hour=hour)if(t_min=min)if(P3_0=0)P1_7=0;delay(1);else P1_7=1;/*主函数*/void main()init_timer(); /*定时器T0初始化*/while(1)/*无限循环*/if(P3_4=0)scan_key();/*有按键，调用按键扫描子函数*/switch(set)/*根据set键值散转*/case 0:time();break;/*走时时间程序*/case 1:time1_adj();break;/*闹时时间调整*/case 2:time_adj();break;/*走时时间调整*/case 3:time1_of();break;/*启/停闹时*/default:break;/*其它退出*/ if(flag!=0x55)/*判断掉电标志*/for(m=0;m100;m+)/*点亮四个8字400mS*/P1=0x80;P3=0xf7;de