数码管显示时间

1、/* 计时器*用到138译码器P22 P23 P24* 数码管接到P0端口*通过按K4可以切换闹铃与时间显示* 按K1可以调秒数（调设置时间的秒数，后同），按K2可以调分数，K3可以调小时数*/#include<reg52.h>#define uint unsigned int #define uchar unsigned char sbit LSA=P22;sbit LSB=P23;sbit LSC=P24;sbit Beep = P15 ;sbit K1=P31;sbit K2=P30;sbit K3=P32;sbit K4=P33;#define First LSA=0;LS

2、B=0;LSC=0/138译码器位数设置#define Second LSA=1;LSB=0;LSC=0#define Third LSA=0;LSB=1;LSC=0#define Fourth LSA=1;LSB=1;LSC=0#define Fifth LSA=0;LSB=0;LSC=1#define Sixth LSA=1;LSB=0;LSC=1#define Seventh LSA=0;LSB=1;LSC=1#define Eighth LSA=1;LSB=1;LSC=1uchar code DIG_CODE16=0x03f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,

3、0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;/0、1、2、3、4、5、6、7、8、9、A、b、C、d、E、F的显示码uchar Time=0;uchar miao1=0,miao2=0,fen1=0,fen2=0,shi1=0,shi2=0;char Setmiao1=-1,Setmiao2=0,Setfen1=0,Setfen2=0,Setshi1=0,Setshi2=0;void TimerConfiguration();void delayms(uchar x);void Timer(); /时间显示void SetingTime(); /时

4、间设置void Clock(); /闹铃void SetingClock(); /闹铃时间设置void SetingClockDisplay(); /闹钟设置显示void Delay(unsigned int i) ; /蜂鸣器所用延时main()uchar Num=1;Beep=0;TimerConfiguration();while(1)if(K4=0) /通过K4来选择是计时还是设置闹铃delayms(1);if(K4=0)Num+;while(!K4);if(Num=2)Num=0;if(Num)SetingClock();else SetingTime();Timer();Clock

5、();void SetingTime() /时间设置if(K1=0)delayms(1); if(K1=0)miao1+;while(!K1);else if(K2=0)delayms(1); if(K2=0)fen1+;while(!K2);elseif(K3=0)delayms(1);if(K3=0)shi1+;while(!K3);elsevoid Timer() /时间显示if(Time=20|Time>20)/每秒miao1+Time=0;miao1+;else /显示：在第一位显示秒的个位P0=0x00;First;P0=0x00;P0=DIG_CODEmiao1;if(mi

6、ao1=10)miao1=0;miao2+;else /显示秒的十位P0=0x00;Second;P0=0x00;P0=DIG_CODEmiao2;if(miao2=6)miao2=0;fen1+;P0=0x00; /显示第三位的“-”Third;P0=0x00;P0=0x40;if(fen1=10)fen1=0;fen2+;else/显示分的个位P0=0x00;Fourth;P0=0x00;P0=DIG_CODEfen1;if(fen2=6)fen2=0;shi1+;else /分的十位P0=0x00;Fifth;P0=0x00;P0=DIG_CODEfen2; P0=0x00;/显示第六位

7、的“-”Sixth;P0=0x00;P0=0x40;if(shi1=10) shi1=0;shi2+;else /显示时的个位P0=0x00;Seventh;P0=0x00;P0=DIG_CODEshi1;/P0=0x00;if(shi2=2) shi2=0;else /显示时的十位P0=0x00;Eighth;P0=0x00;P0=DIG_CODEshi2;/P0=0x00;void SetingClock() /闹铃时间设置 SetingClockDisplay(); /闹钟设置显示/*通过按键来设置闹铃时间*/if(K1=0)delayms(1); if(K1=0)Setmiao1+;w

8、hile(!K1);elseif(K2=0)delayms(1); if(K2=0)Setfen1+;while(!K2);elseif(K3=0)delayms(1);if(K3=0)Setshi1+;while(!K3);else/*时间的进位设置*/if(Setmiao1=10)Setmiao1=0;Setmiao2+;if(Setmiao2=6)Setmiao2=0;Setfen1+;if(Setfen1=10)Setfen1=0;Setfen2+; if(Setfen2=6)Setfen2=0;Setshi1+;if(Setshi1=10)Setshi1=0;Setshi2+;if(

9、 (Setshi2=2)&&(Setshi1=3) ) /即23时Setshi1=0;Setshi2=0;void Clock() /闹铃if( (Setmiao1=miao1)&&(Setmiao2=miao2)&&(Setfen1=fen1)&&(Setfen2=fen2)&&(Setshi1=shi1)&&(Setshi2=shi2) )while(1)Beep=1;Delay(5);Beep=0;Delay(5);void SetingClockDisplay() /闹钟设置显示P0=0x0

10、0;First;P0=0x00;P0=DIG_CODESetmiao1;P0=0x00;Second;P0=0x00;P0=DIG_CODESetmiao2;P0=0x00;Fourth;P0=0x00;P0=DIG_CODESetfen1;P0=0x00;Fifth;P0=0x00;P0=DIG_CODESetfen2;P0=0x00;Seventh;P0=0x00;P0=DIG_CODESetshi1;P0=0x00;Eighth;P0=0x00;P0=DIG_CODESetshi2;void TimerConfiguration() /中断的设置 TMOD = 0x01; /选择工作方式1 TH0 = 0x3C; /设置初始值,定时50MS TL0 = 0xB0; EA = 1; /打开总中断 ET0 = 1; /打开定时器0中断 TR0 = 1; /启动定时器0/* 函数名 : Timer0()* 函数功能 : 定时器0中断函数* 输入 : 无* 输出 : 无*/ void Timer0() interrupt 1TH0 = 0x3C; /设置初始值TL0 = 0xB0;Time+;void delayms(uchar x) /