电子时钟51单片机

⑴ 51单片机控制的电子时钟系统 毕业设计

可以用1302做
我有现成的
LCD1602
显示的，51做的
基本思路是用单片机读取1302里面的信息，处理，然后送LCD1602显示。
有兴趣可以去我博客看，里面还上传了之前我做的实物图片和PCB，可以照着做。

⑵ 51单片机的时钟电路产生方法是

51单片机的时钟电路产生的方法是什么呢？
这种单片机的时钟电路一般是利用晶振构建电路的，
因为晶振电路振荡性能相当稳定。

⑶ 51单片机设计电子时钟。

#include <reg51.h>
#define uint unsigned int
#define uchar unsigned char
sbit key1=P3^0;
sbit key2=P3^1;
uchar code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
uchar shi,fen,miao,num1 ,num2,num3,num4,num5,num6,num7;
void delayms (uint xms)
{
uint i,j;
for(i=xms;i>0;i--)
for(j=110;j>0;j--);
}
void miaodisplay (uchar num6,uchar num5)
{
P2=0x00;
P2=0x80;
P1=table[num6];
delayms(5);
P2=0x00;
P2=0x40;
P1=table[num5];
delayms(5);
}
void fendisplay(uchar num4,uchar num3)
{
P2=0x00;
P2=0x10;
P1=table[num4];
delayms(5);
P2=0x00;
P2=0x08;
P1=table[num3];
delayms(5);
}
void shidisplay(uchar num2,uchar num1)
{
P2=0x00;
P2=0x02;
P1=table[num2];
delayms(5);
P2=0x00;
P2=0x01;
P1=table[num1];
delayms(5);
}

void main ()
{
TMOD=0x01;
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
EA=1;
ET0=1;
TR0=1;
shi=0;
fen=0;
miao=0;
num7=0;
while (1)
{
num1=shi/10;
num2=shi%10;
num3=fen/10;
num4=fen%10;
num5=miao/10;
num6=miao%10;
miaodisplay(num6,num5);
P2=0x00;
P2=0x20;
P1=0xbf;
delayms(5);
fendisplay(num4,num3);
P2=0x00;
P2=0x04;
P1=0xbf;
delayms(5);
shidisplay(num2,num1);

}
}
void T0_time () interrupt 1
{
TH0=(65535-50000)/256;
TL0=(65535-50000)%256;
num7++;
if(num7==20)
{
num7=0;
miao++;
if(miao==60)
{
miao=0;
fen++;
if(fen==60)
{
fen=0;
shi++;
if(shi==24)
{
shi=0;
fen=0;
miao=0;
}
}
}
}
}

⑷ 51单片机制作电子钟

农历转换需要以个数据库，我赠送你一C语言的农历转换

#define c_sun 0

/********阳历转换阴历********************************************************************/
code uchar year_code[597]={
0x04,0xAe,0x53, //1901 0
0x0A,0x57,0x48, //1902 3
0x55,0x26,0xBd, //1903 6
0x0d,0x26,0x50, //1904 9
0x0d,0x95,0x44, //1905 12
0x46,0xAA,0xB9, //1906 15
0x05,0x6A,0x4d, //1907 18
0x09,0xAd,0x42, //1908 21
0x24,0xAe,0xB6, //1909
0x04,0xAe,0x4A, //1910
0x6A,0x4d,0xBe, //1911
0x0A,0x4d,0x52, //1912
0x0d,0x25,0x46, //1913
0x5d,0x52,0xBA, //1914
0x0B,0x54,0x4e, //1915
0x0d,0x6A,0x43, //1916
0x29,0x6d,0x37, //1917
0x09,0x5B,0x4B, //1918
0x74,0x9B,0xC1, //1919
0x04,0x97,0x54, //1920
0x0A,0x4B,0x48, //1921
0x5B,0x25,0xBC, //1922
0x06,0xA5,0x50, //1923
0x06,0xd4,0x45, //1924
0x4A,0xdA,0xB8, //1925
0x02,0xB6,0x4d, //1926
0x09,0x57,0x42, //1927
0x24,0x97,0xB7, //1928
0x04,0x97,0x4A, //1929
0x66,0x4B,0x3e, //1930
0x0d,0x4A,0x51, //1931
0x0e,0xA5,0x46, //1932
0x56,0xd4,0xBA, //1933
0x05,0xAd,0x4e, //1934
0x02,0xB6,0x44, //1935
0x39,0x37,0x38, //1936
0x09,0x2e,0x4B, //1937
0x7C,0x96,0xBf, //1938
0x0C,0x95,0x53, //1939
0x0d,0x4A,0x48, //1940
0x6d,0xA5,0x3B, //1941
0x0B,0x55,0x4f, //1942
0x05,0x6A,0x45, //1943
0x4A,0xAd,0xB9, //1944
0x02,0x5d,0x4d, //1945
0x09,0x2d,0x42, //1946
0x2C,0x95,0xB6, //1947
0x0A,0x95,0x4A, //1948
0x7B,0x4A,0xBd, //1949
0x06,0xCA,0x51, //1950
0x0B,0x55,0x46, //1951
0x55,0x5A,0xBB, //1952
0x04,0xdA,0x4e, //1953
0x0A,0x5B,0x43, //1954
0x35,0x2B,0xB8, //1955
0x05,0x2B,0x4C, //1956
0x8A,0x95,0x3f, //1957
0x0e,0x95,0x52, //1958
0x06,0xAA,0x48, //1959
0x7A,0xd5,0x3C, //1960
0x0A,0xB5,0x4f, //1961
0x04,0xB6,0x45, //1962
0x4A,0x57,0x39, //1963
0x0A,0x57,0x4d, //1964
0x05,0x26,0x42, //1965
0x3e,0x93,0x35, //1966
0x0d,0x95,0x49, //1967
0x75,0xAA,0xBe, //1968
0x05,0x6A,0x51, //1969
0x09,0x6d,0x46, //1970
0x54,0xAe,0xBB, //1971
0x04,0xAd,0x4f, //1972
0x0A,0x4d,0x43, //1973
0x4d,0x26,0xB7, //1974
0x0d,0x25,0x4B, //1975
0x8d,0x52,0xBf, //1976
0x0B,0x54,0x52, //1977
0x0B,0x6A,0x47, //1978
0x69,0x6d,0x3C, //1979
0x09,0x5B,0x50, //1980
0x04,0x9B,0x45, //1981
0x4A,0x4B,0xB9, //1982
0x0A,0x4B,0x4d, //1983
0xAB,0x25,0xC2, //1984
0x06,0xA5,0x54, //1985
0x06,0xd4,0x49, //1986
0x6A,0xdA,0x3d, //1987
0x0A,0xB6,0x51, //1988
0x09,0x37,0x46, //1989
0x54,0x97,0xBB, //1990
0x04,0x97,0x4f, //1991
0x06,0x4B,0x44, //1992
0x36,0xA5,0x37, //1993
0x0e,0xA5,0x4A, //1994
0x86,0xB2,0xBf, //1995
0x05,0xAC,0x53, //1996
0x0A,0xB6,0x47, //1997
0x59,0x36,0xBC, //1998
0x09,0x2e,0x50, //1999 294
0x0C,0x96,0x45, //2000 297
0x4d,0x4A,0xB8, //2001
0x0d,0x4A,0x4C, //2002
0x0d,0xA5,0x41, //2003
0x25,0xAA,0xB6, //2004
0x05,0x6A,0x49, //2005
0x7A,0xAd,0xBd, //2006
0x02,0x5d,0x52, //2007
0x09,0x2d,0x47, //2008
0x5C,0x95,0xBA, //2009
0x0A,0x95,0x4e, //2010
0x0B,0x4A,0x43, //2011
0x4B,0x55,0x37, //2012
0x0A,0xd5,0x4A, //2013
0x95,0x5A,0xBf, //2014
0x04,0xBA,0x53, //2015
0x0A,0x5B,0x48, //2016
0x65,0x2B,0xBC, //2017
0x05,0x2B,0x50, //2018
0x0A,0x93,0x45, //2019
0x47,0x4A,0xB9, //2020
0x06,0xAA,0x4C, //2021
0x0A,0xd5,0x41, //2022
0x24,0xdA,0xB6, //2023
0x04,0xB6,0x4A, //2024
0x69,0x57,0x3d, //2025
0x0A,0x4e,0x51, //2026
0x0d,0x26,0x46, //2027
0x5e,0x93,0x3A, //2028
0x0d,0x53,0x4d, //2029
0x05,0xAA,0x43, //2030
0x36,0xB5,0x37, //2031
0x09,0x6d,0x4B, //2032
0xB4,0xAe,0xBf, //2033
0x04,0xAd,0x53, //2034
0x0A,0x4d,0x48, //2035
0x6d,0x25,0xBC, //2036
0x0d,0x25,0x4f, //2037
0x0d,0x52,0x44, //2038
0x5d,0xAA,0x38, //2039
0x0B,0x5A,0x4C, //2040
0x05,0x6d,0x41, //2041
0x24,0xAd,0xB6, //2042
0x04,0x9B,0x4A, //2043
0x7A,0x4B,0xBe, //2044
0x0A,0x4B,0x51, //2045
0x0A,0xA5,0x46, //2046
0x5B,0x52,0xBA, //2047
0x06,0xd2,0x4e, //2048
0x0A,0xdA,0x42, //2049
0x35,0x5B,0x37, //2050
0x09,0x37,0x4B, //2051
0x84,0x97,0xC1, //2052
0x04,0x97,0x53, //2053
0x06,0x4B,0x48, //2054
0x66,0xA5,0x3C, //2055
0x0e,0xA5,0x4f, //2056
0x06,0xB2,0x44, //2057
0x4A,0xB6,0x38, //2058
0x0A,0xAe,0x4C, //2059
0x09,0x2e,0x42, //2060
0x3C,0x97,0x35, //2061
0x0C,0x96,0x49, //2062
0x7d,0x4A,0xBd, //2063
0x0d,0x4A,0x51, //2064
0x0d,0xA5,0x45, //2065
0x55,0xAA,0xBA, //2066
0x05,0x6A,0x4e, //2067
0x0A,0x6d,0x43, //2068
0x45,0x2e,0xB7, //2069
0x05,0x2d,0x4B, //2070
0x8A,0x95,0xBf, //2071
0x0A,0x95,0x53, //2072
0x0B,0x4A,0x47, //2073
0x6B,0x55,0x3B, //2074
0x0A,0xd5,0x4f, //2075
0x05,0x5A,0x45, //2076
0x4A,0x5d,0x38, //2077
0x0A,0x5B,0x4C, //2078
0x05,0x2B,0x42, //2079
0x3A,0x93,0xB6, //2080
0x06,0x93,0x49, //2081
0x77,0x29,0xBd, //2082
0x06,0xAA,0x51, //2083
0x0A,0xd5,0x46, //2084
0x54,0xdA,0xBA, //2085
0x04,0xB6,0x4e, //2086
0x0A,0x57,0x43, //2087
0x45,0x27,0x38, //2088
0x0d,0x26,0x4A, //2089
0x8e,0x93,0x3e, //2090
0x0d,0x52,0x52, //2091
0x0d,0xAA,0x47, //2092
0x66,0xB5,0x3B, //2093
0x05,0x6d,0x4f, //2094
0x04,0xAe,0x45, //2095
0x4A,0x4e,0xB9, //2096
0x0A,0x4d,0x4C, //2097
0x0d,0x15,0x41, //2098
0x2d,0x92,0xB5, //2099
};
///月份数据表
code uchar day_code1[9]={0x0,0x1f,0x3b,0x5a,0x78,0x97,0xb5,0xd4,0xf3};
code uint day_code2[3]={0x111,0x130,0x14e};
/*
函数功能:输入BCD阳历数据,输出BCD阴历数据(只允许1901-2099年)
调用函数示例:Conversion(c_sun,year_sun,month_sun,day_sun)
如:计算2004年10月16日Conversion(0,0x4,0x10,0x16);
c_sun,year_sun,month_sun,day_sun均为BCD数据,c_sun为世纪标志位,c_sun=0为21世
纪,c_sun=1为19世纪
调用函数后,原有数据不变,读c_moon,year_moon,month_moon,day_moon得出阴历BCD数据
*/
bit c_moon;
data uchar year_moon,month_moon,day_moon,week;
/*子函数,用于读取数据表中农历月的大月或小月,如果该月为大返回1,为小返回0*/
bit get_moon_day(uchar month_p,uint table_addr)
{
uchar temp;
switch (month_p){
case 1:{temp=year_code[table_addr]&0x08;
if (temp==0)return(0);else return(1);}
case 2:{temp=year_code[table_addr]&0x04;
if (temp==0)return(0);else return(1);}
case 3:{temp=year_code[table_addr]&0x02;
if (temp==0)return(0);else return(1);}
case 4:{temp=year_code[table_addr]&0x01;
if (temp==0)return(0);else return(1);}
case 5:{temp=year_code[table_addr+1]&0x80;
if (temp==0) return(0);else return(1);}
case 6:{temp=year_code[table_addr+1]&0x40;
if (temp==0)return(0);else return(1);}
case 7:{temp=year_code[table_addr+1]&0x20;
if (temp==0)return(0);else return(1);}
case 8:{temp=year_code[table_addr+1]&0x10;
if (temp==0)return(0);else return(1);}
case 9:{temp=year_code[table_addr+1]&0x08;
if (temp==0)return(0);else return(1);}
case 10:{temp=year_code[table_addr+1]&0x04;
if (temp==0)return(0);else return(1);}
case 11:{temp=year_code[table_addr+1]&0x02;
if (temp==0)return(0);else return(1);}
case 12:{temp=year_code[table_addr+1]&0x01;
if (temp==0)return(0);else return(1);}
case 13:{temp=year_code[table_addr+2]&0x80;
if (temp==0)return(0);else return(1);}
}
}
/*
函数功能:输入BCD阳历数据,输出BCD阴历数据(只允许1901-2099年)
调用函数示例:Conversion(c_sun,year_sun,month_sun,day_sun)
如:计算2004年10月16日Conversion(0,0x4,0x10,0x16);
c_sun,year_sun,month_sun,day_sun均为BCD数据,c_sun为世纪标志位,c_sun=0为21世
纪,c_sun=1为19世纪
调用函数后,原有数据不变,读c_moon,year_moon,month_moon,day_moon得出阴历BCD数据
*/
void Conversion(bit c,uchar year,uchar month,uchar day)
{ //c=0 为21世纪,c=1 为19世纪 输入输出数据均为BCD数据
uchar temp1,temp2,temp3,month_p;
uint temp4,table_addr;
bit flag2,flag_y;
temp1=year/16; //BCD->hex 先把数据转换为十六进制
temp2=year%16;
year=temp1*10+temp2;
temp1=month/16;
temp2=month%16;
month=temp1*10+temp2;
temp1=day/16;
temp2=day%16;
day=temp1*10+temp2;
//定位数据表地址
if(c==0){
table_addr=(year+0x64-1)*0x3;
}
else {
table_addr=(year-1)*0x3;
}
//定位数据表地址完成
//取当年春节所在的公历月份
temp1=year_code[table_addr+2]&0x60;
temp1=_cror_(temp1,5);
//取当年春节所在的公历月份完成
//取当年春节所在的公历日
temp2=year_code[table_addr+2]&0x1f;
//取当年春节所在的公历日完成
// 计算当年春年离当年元旦的天数,春节只会在公历1月或2月
if(temp1==0x1){
temp3=temp2-1;
}
else{
temp3=temp2+0x1f-1;
}
// 计算当年春年离当年元旦的天数完成
//计算公历日离当年元旦的天数,为了减少运算,用了两个表
//day_code1[9],day_code2[3]
//如果公历月在九月或前,天数会少于0xff,用表day_code1[9],
//在九月后,天数大于0xff,用表day_code2[3]
//如输入公历日为8月10日,则公历日离元旦天数为day_code1[8-1]+10-1
//如输入公历日为11月10日,则公历日离元旦天数为day_code2[11-10]+10-1
if (month<10){
temp4=day_code1[month-1]+day-1;
}
else{
temp4=day_code2[month-10]+day-1;
}
if ((month>0x2)&&(year%0x4==0)){ //如果公历月大于2月并且该年的2月为闰月,天数加1
temp4+=1;
}
//计算公历日离当年元旦的天数完成
//判断公历日在春节前还是春节后
if (temp4>=temp3){ //公历日在春节后或就是春节当日使用下面代码进行运算
temp4-=temp3;
month=0x1;
month_p=0x1; //month_p为月份指向,公历日在春节前或就是春节当日month_p指向首月
flag2=get_moon_day(month_p,table_addr); //检查该农历月为大小还是小月,大月返回1,小月返回0
flag_y=0;
if(flag2==0)temp1=0x1d; //小月29天
else temp1=0x1e; //大小30天
temp2=year_code[table_addr]&0xf0;
temp2=_cror_(temp2,4); //从数据表中取该年的闰月月份,如为0则该年无闰月
while(temp4>=temp1){
temp4-=temp1;
month_p+=1;
if(month==temp2){
flag_y=~flag_y;
if(flag_y==0)month+=1;
}
else month+=1;
flag2=get_moon_day(month_p,table_addr);
if(flag2==0)temp1=0x1d;
else temp1=0x1e;
}
day=temp4+1;
}
else{ //公历日在春节前使用下面代码进行运算
temp3-=temp4;
if (year==0x0){year=0x63;c=1;}
else year-=1;
table_addr-=0x3;
month=0xc;
temp2=year_code[table_addr]&0xf0;
temp2=_cror_(temp2,4);
if (temp2==0)month_p=0xc;
else month_p=0xd; //
/*
month_p为月份指向,如果当年有闰月,一年有十三个月,月指向13,
无闰月指向12
*/
flag_y=0;
flag2=get_moon_day(month_p,table_addr);
if(flag2==0)temp1=0x1d;
else temp1=0x1e;
while(temp3>temp1){
temp3-=temp1;
month_p-=1;
if(flag_y==0)month-=1;
if(month==temp2)flag_y=~flag_y;
flag2=get_moon_day(month_p,table_addr);
if(flag2==0)temp1=0x1d;
else temp1=0x1e;
}
day=temp1-temp3+1;
}
c_moon=c; //HEX->BCD ,运算结束后,把数据转换为BCD数据
temp1=year/10;
temp1=_crol_(temp1,4);
temp2=year%10;
year_moon=temp1|temp2;
temp1=month/10;
temp1=_crol_(temp1,4);
temp2=month%10;
month_moon=temp1|temp2;
temp1=day/10;
temp1=_crol_(temp1,4);
temp2=day%10;
day_moon=temp1|temp2;
}
void nl()
{
unsigned char yy1,yy2;
Conversion(0,yy,mo,dd);
LCM_WriteDatOrCom(0,0x90);
LCM_WriteString("农历");//原代码为
LCM_WriteDatOrCom(1,year_moon/16+'0');
LCM_WriteDatOrCom(1,year_moon%16+'0');
LCM_WriteDatOrCom(1,'-');
LCM_WriteDatOrCom(1,month_moon/16+'0');
LCM_WriteDatOrCom(1,month_moon%16+'0');
LCM_WriteDatOrCom(1,'-');
LCM_WriteDatOrCom(1,day_moon/16+'0');
LCM_WriteDatOrCom(1,day_moon%16+'0');
yy1=(year_moon/16)*10+year_moon%16;
yy2=yy1%12;
switch(yy2)
{
case 0: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("龙");
break;
case 1: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("蛇");
break;
case 2: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("马");
break;
case 3: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("羊");
break;
case 4: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("猴");
break;
case 5: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("鸡");
break;
case 6: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("狗");
break;
case 7: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("猪");
break;
case 8: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("鼠");
break;
case 9: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("牛");
break;
case 10: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("虎");
break;
case 11: LCM_WriteDatOrCom(0,0x87);LCM_WriteString("兔");
break;
}
}

还有我想你的中断函数过长不会是一件好事，主程序的显示部分可能会不正常

⑸ 51单片机做数字电子钟

这么复杂的东西给这么少分 晕死了 你也太小气了吧，分多的话还可能帮你动动脑

⑹ 关于用51单片机做一个电子时钟的问题

程序中好像还没有自动加时的部分，并且按键处理还没有消抖措施

不多说了，上程序，俺刚刚为你编写的，测试的时候使用的端口和你的不一样

在我的开发板上测试成功后，按照你的板子端口做了修改

如果你直接复制到你的程序中不能使用，检查及更改一下端口即可

如果满意记得采纳哦，若有疑问可以随时向我提问

/***************************************************************************/

//#include<stdio.h>

#include<reg51.h>

sbit p20=P2^0; sbit p21=P2^1; sbit led=P2^7;

char dis_2[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//数码管显示编码

unsigned int h,m,s,t,n;

/***************************************************************************/

void delay(char hs)//延时函数

{char hk;for(;hs>0;hs--){for(hk=100;hk>0;hk--);}}

/***************************************************************************/

void XS(unsigned int xh,unsigned int xs) //显示子函数

{

char d1,d2,d3,d4;

d1=(xs/1)%10; d2=(xs/10)%10;

d3=(xh/1)%10; d4=(xh/10)%10;

P0=dis_2[d1]; P1=0x08; delay(10); P1=0x00;//秒个位

P0=dis_2[d2]; P1=0x04; delay(10); P1=0x00;//秒十位

P0=0x7f; P1=0x04; delay(10); P1=0x00;//小数点

P0=dis_2[d3]; P1=0x02; delay(10); P1=0x00;//时个位

P0=dis_2[d4]; P1=0x01; delay(10); P1=0x00;//时十位

}

/***************************************************************************/

void main(void)

{

TH0=(65536-1000)/256; TL0=(65536-1000)%256;

TMOD=0x01; EA=1; ET0=1; TR0=1;//定时器初始化

while(1)//主循环

{

if(p20==0){delay(10);if(p20==0){h++;if(h>23){h=0;}}while(!p20){XS(h,m);}}

if(p21==0){delay(10);if(p21==0){m++;if(m>59){m=0;}}while(!p21){XS(h,m);}}

XS(h,m);//调用数码管显示函数

}

}

/***************************************************************************/

void int1() interrupt 1 //定时器中断

{

TH0=(65536-1000)/256; TL0=(65536-1000)%256; n++;t++;

if(t>500){t=0;led=~led;}//LED闪烁

if(n>1000){n=0;s++;}//如果达到一秒，秒加一

if(s>59){s=0;m++;}//如果达到一分，分加一

if(m>59){m=0;h++;}//如果达到一小时，小时加一

if(h>23){h=0;}//如果达到24小时，小时清零

}

/***************************************************************************/

⑺ 51单片机做电子时钟

使用单片机的定时器中断可实现。例如定时器中断方式2，8位自动初值重装，初值设置为0，晶振为11.0592M的情况下，中断3600次为1秒钟..多做几个变量，比如秒、分、小时等...60秒时，分++，秒清零...60分时，小时++，分清零...外加一个显示或串口功能..就完成了一个简单的电子时钟

⑻ MCS51单片机电子时钟

* 标题: 试验数码管显示时钟 *
* *
* 通过本例程了解 DS1302时钟芯片的基本原理和使用 ,理解并掌握DS1302时钟芯片 *
* 驱动程序的编写以及实现数字字符在数码管中的显示。 *
* 注意：JP1302跳线冒要短接。 *
* 请学员认真消化本例程，懂DS1302在C语言中的操作 *
********************************************************************************/
#include<reg52.h> //包含头文件，一般情况不需要改动，头文件包含特殊功能寄存器的定义
#include <intrins.h>

sbit SCK=P3^6; //时钟
sbit SDA=P3^4; //数据
sbit RST = P3^5;// DS1302复位

sbit LS138A=P2^2;
sbit LS138B=P2^3;
sbit LS138C=P2^4;

bit ReadRTC_Flag;//定义读DS1302标志

unsigned char l_tmpdate[7]={0,0,12,15,5,3,8};//秒分时日月周年08-05-15 12:00:00
unsigned char l_tmpdisplay[8];

code unsigned char write_rtc_address[7]={0x80,0x82,0x84,0x86,0x88,0x8a,0x8c}; //秒分时日月周年 最低位读写位
code unsigned char read_rtc_address[7]={0x81,0x83,0x85,0x87,0x89,0x8b,0x8d};

code unsigned char table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};
//共阴数码管 0-9 '-' '熄灭‘表

/******************************************************************/
/* 函数声明 */
/******************************************************************/
void Write_Ds1302_byte(unsigned char temp);
void Write_Ds1302( unsigned char address,unsigned char dat );
unsigned char Read_Ds1302 ( unsigned char address );
void Read_RTC(void);//read RTC
void Set_RTC(void); //set RTC
void InitTIMER0(void);//inital timer0
/******************************************************************/
/* 主函数 */
/******************************************************************/
void main(void)
{
InitTIMER0(); //初始化定时器0
Set_RTC(); //写入时钟值，如果使用备用电池时候，不需要没每次上电写入，此程序应该屏蔽

while(1)
{
if(ReadRTC_Flag)
{
ReadRTC_Flag=0;
Read_RTC();

l_tmpdisplay[0]=l_tmpdate[2]/16; //数据的转换，因我们采用数码管0~9的显示,将数据分开
l_tmpdisplay[1]=l_tmpdate[2]&0x0f;
l_tmpdisplay[2]=10; //加入"-"
l_tmpdisplay[3]=l_tmpdate[1]/16;
l_tmpdisplay[4]=l_tmpdate[1]&0x0f;
l_tmpdisplay[5]=10;
l_tmpdisplay[6]=l_tmpdate[0]/16;
l_tmpdisplay[7]=l_tmpdate[0]&0x0f;

}
}
}
/******************************************************************/
/* 定时器0初始化 */
/******************************************************************/
void InitTIMER0(void)
{
TMOD|=0x01;//定时器设置 16位
TH0=0xef;//初始化值
TL0=0xf0;
ET0=1;
TR0=1;
EA=1;
}

/******************************************************************/
/* 写一个字节 */
/******************************************************************/
void Write_Ds1302_Byte(unsigned char temp)
{
unsigned char i;
for (i=0;i<8;i++) //循环8次 写入数据
{
SCK=0;
SDA=temp&0x01; //每次传输低字节
temp>>=1; //右移一位
SCK=1;
}
}
/******************************************************************/
/* 写入DS1302 */
/******************************************************************/
void Write_Ds1302( unsigned char address,unsigned char dat )
{
RST=0;
_nop_();
SCK=0;
_nop_();
RST=1;
_nop_(); //启动
Write_Ds1302_Byte(address); //发送地址
Write_Ds1302_Byte(dat); //发送数据
RST=0; //恢复
}
/******************************************************************/
/* 读出DS1302数据 */
/******************************************************************/
unsigned char Read_Ds1302 ( unsigned char address )
{
unsigned char i,temp=0x00;
RST=0;
_nop_();
_nop_();
SCK=0;
_nop_();
_nop_();
RST=1;
_nop_();
_nop_();
Write_Ds1302_Byte(address);
for (i=0;i<8;i++) //循环8次 读取数据
{
if(SDA)
temp|=0x80; //每次传输低字节
SCK=0;
temp>>=1; //右移一位
_nop_();
_nop_();
_nop_();
SCK=1;
}
RST=0;
_nop_(); //以下为DS1302复位的稳定时间
_nop_();
RST=0;
SCK=0;
_nop_();
_nop_();
_nop_();
_nop_();
SCK=1;
_nop_();
_nop_();
SDA=0;
_nop_();
_nop_();
SDA=1;
_nop_();
_nop_();
return (temp); //返回
}
/******************************************************************/
/* 读时钟数据 */
/******************************************************************/
void Read_RTC(void) //读取 日历
{
unsigned char i,*p;
p=read_rtc_address; //地址传递
for(i=0;i<7;i++) //分7次读取 秒分时日月周年
{
l_tmpdate[i]=Read_Ds1302(*p);
p++;
}
}
/******************************************************************/
/* 设定时钟数据 */
/******************************************************************/
void Set_RTC(void) //设定 日历
{
unsigned char i,*p,tmp;
for(i=0;i<7;i++){ //BCD处理
tmp=l_tmpdate[i]/10;
l_tmpdate[i]=l_tmpdate[i]%10;
l_tmpdate[i]=l_tmpdate[i]+tmp*16;
}
Write_Ds1302(0x8E,0X00);

p=write_rtc_address; //传地址
for(i=0;i<7;i++) //7次写入 秒分时日月周年
{
Write_Ds1302(*p,l_tmpdate[i]);
p++;
}
Write_Ds1302(0x8E,0x80);
}
/******************************************************************/
/* 定时器中断函数 */
/******************************************************************/
void tim(void) interrupt 1 using 1
//中断，用于数码管扫描
{

static unsigned char i,num;
TH0=0xf5;
TL0=0xe0;

P0=table[l_tmpdisplay[i]]; //查表法得到要显示数字的数码段

switch(i)
{
case 0:LS138A=0; LS138B=0; LS138C=0; break;
case 1:LS138A=1; LS138B=0; LS138C=0; break;
case 2:LS138A=0; LS138B=1; LS138C=0; break;
case 3:LS138A=1; LS138B=1; LS138C=0; break;
case 4:LS138A=0; LS138B=0; LS138C=1; break;
case 5:LS138A=1; LS138B=0; LS138C=1; break;
case 6:LS138A=0; LS138B=1; LS138C=1; break;
case 7:LS138A=1; LS138B=1; LS138C=1; break;

}
i++;
if(i==8)
{
i=0;
num++;
if(10==num) //隔段时间读取1302的数据。时间间隔可以调整
{
ReadRTC_Flag=1; //使用标志位判断
num=0;
}
}
}

⑼ 51单片机简易电子钟设计。汇编语言编写

KEYVALEQU 30H
KEYTMEQU 31H
KEYSCANEQU 32H
DATEQU 33H
SCANLEDEQU 39H
CLKEQU 77H
SECEQU 78H
MINEQU 79H
HOUREQU 7AH
PAUSEBIT 00H
DOTBIT 01H
ORG 0000H
LJMP MAIN
ORG 000BH
LJMP T0ISR;50ms定时
ORG 001BH
LJMP T1ISR;扫描显示
ORG 0030H
MAIN:
MOV SP,#5FH
MOV TMOD,#11H
MOV TH0,#03CH
MOV TL0,#0B0H
MOV TH1,#0ECH
MOV TL1,#078H
MOV KEYVAL,#0
MOV SCANLED,#0
MOV 33H,#10H
MOV 34H,#10H
MOV 35H,#10H
MOV 36H,#10H
MOV 37H,#10H
MOV 38H,#10H
MOV SEC,#0
MOV MIN,#0
MOV HOUR,#0
MOV CLK,#0
CLR PAUSE
SETB EA
SETB ET1
SETB TR1
LOOP:
LCALL KEYSEL
MOV A,KEYVAL
CJNE A,#0FFH,LOOP1
SJMP LOOP
LOOP1:
CJNE A,#10,LOOP2;“ON”启动
SETB TR0
SETB ET0
SETB PAUSE
SJMP LOOP
LOOP2:
CJNE A,#11,LOOP3;“=”清零
MOV SEC,#0
MOV MIN,#0
MOV HOUR,#0
LCALL DISCHG
SJMP LOOP
LOOP3:
CJNE A,#15,LOOP4;“+”暂停
CLR TR0
CLR ET0
CLR PAUSE
SJMP LOOP
LOOP4:
CJNE A,#14,LOOP5;“-”清显示暂停
MOV 33H,#10H
MOV 34H,#10H
MOV 35H,#10H
MOV 36H,#10H
MOV 37H,#10H
MOV 38H,#10H
CLR TR0
CLR ET0
CLR PAUSE
SJMP LOOP
LOOP5:
CJNE A,#10,LOOP6;数字键
LOOP6:
JC LOOP7
LJMP LOOP
LOOP7:
JNB PAUSE,LOOP8;暂停状态可以输入数字键
LJMP LOOP
LOOP8:
MOV 33H,34H
MOV 34H,35H
MOV 35H,36H
MOV 36H,37H
MOV 37H,38H
MOV 38H,KEYVAL
MOV A,33H
SWAP A
ORL A,34H
LCALL BCDH
MOV HOUR,A
MOV A,35H
SWAP A
ORL A,36H
LCALL BCDH
MOV MIN,A
MOV A,37H
SWAP A
ORL A,38H
LCALL BCDH
MOV SEC,A
LJMP LOOP

;------------------
;BCD转换为十六进制
BCDH:
MOV B,#10H
DIV AB
MOV R7,B
MOV B,#10
MUL AB
ADD A,R7
RET
;------------------
;十六进制转换为BCD
HBCD:
MOV B,#10
DIV AB
SWAP A
ORL A,B
RET
;------------------
KEYSEL:
MOVKEYVAL,#0
MOVKEYSCAN,#0EFH
LCALLGETKEY
MOVA,KEYTM
JZKEYS1
MOVKEYVAL,A
SJMPKEYRTN
KEYS1:
MOVKEYSCAN,#0DFH
LCALLGETKEY
MOVA,KEYTM
JZKEYS2
CLRC
ADDA,#4
MOVKEYVAL,A
SJMPKEYRTN
KEYS2:
MOVKEYSCAN,#0BFH
LCALLGETKEY
MOVA,KEYTM
JZKEYS3
CLRC
ADDA,#8
MOVKEYVAL,A
SJMPKEYRTN
KEYS3:
MOVKEYSCAN,#7FH
LCALLGETKEY
MOVA,KEYTM
JZKEYRTN
CLRC
ADDA,#12
MOVKEYVAL,A
KEYRTN:
LCALL CHGKEY
RET
;--------------------
GETKEY:
MOV KEYTM,#0
MOVA,KEYSCAN
MOVP3,A
NOP
MOVA,P3
ANLA,#0FH
XRLA,#0FH
JZNOKEY
MOV R2,#10
LCALL DELAY
MOVA,P3
ANLA,#0FH
XRLA,#0FH
JZNOKEY
MOVA,P3
ANLA,#0FH
MOVR7,A
SF:
MOVA,P3
ANLA,#0FH
XRLA,#0FH
JNZSF
MOVA,R7
CJNEA,#0EH,NK1
MOVKEYTM,#1
SJMPNOKEY
NK1:
CJNEA,#0DH,NK2
MOVKEYTM,#2
SJMPNOKEY
NK2:
CJNEA,#0BH,NK3
MOVKEYTM,#3
SJMPNOKEY
NK3:
CJNEA,#07H,NOKEY
MOVKEYTM,#4
NOKEY:RET
;--------------------
DELAY:
MOV R3,#50
DELAY1:
MOV R4,#100
DJNZ R4,$
DJNZ R3,DELAY1
DJNZ R2,DELAY
RET
;--------------------
T0ISR:
PUSH ACC
CLR TR0
MOV TH0,#3CH
MOV TL0,#0B0H
SETB TR0
INC CLK
MOV A,CLK
CJNE A,#20,T0ISRE
MOV CLK,#0
INC SEC
MOV A,SEC
CJNE A,#60,T0ISRE
MOV SEC,#0
INC MIN
MOV A,MIN
CJNE A,#60,T0ISRE
MOV MIN,#0
INC HOUR
MOV A,HOUR
CJNE A,#24,T0ISRE
MOV SEC,#0
MOV MIN,#0
MOV HOUR,#0
T0ISRE:
LCALL DISCHG
POP ACC
RETI
;--------------------
DISCHG:
MOV A,HOUR
LCALL HBCD
PUSH ACC
ANL A,#0FH
MOV 34H,A
POP ACC
ANL A,#0F0H
SWAP A
MOV 33H,A
MOV A,MIN
LCALL HBCD
PUSH ACC
ANL A,#0FH
MOV 36H,A
POP ACC
ANL A,#0F0H
SWAP A
MOV 35H,A
MOV A,SEC
LCALL HBCD
PUSH ACC
ANL A,#0FH
MOV 38H,A
POP ACC
ANL A,#0F0H
SWAP A
MOV 37H,A
RET
;--------------------
T1ISR:
PUSH ACC
CLR TR1
MOV TH1,#0ECH
MOV TL1,#78H
SETB TR1
MOV DPTR,#LEDTAB
T100:
MOV R0,#DAT
MOV A,SCANLED
ADD A,R0
MOV R0,A
MOV A,SCANLED
JNZ T101
MOV P2,#01H
CLR DOT
SJMP T1DIS
T101:
DEC A
JNZ T102
MOV P2,#02H
SETB DOT
SJMP T1DIS
T102:
DEC A
JNZ T103
MOV P2,#04H
CLR DOT
SJMP T1DIS
T103:
DEC A
JNZ T104
MOV P2,#08H
SETB DOT
SJMP T1DIS
T104:
DEC A
JNZ T105
MOV P2,#10H
CLR DOT
SJMP T1DIS
T105:
MOV P2,#20H
CLR DOT
T1DIS:
MOV A,@R0
MOVC A,@A+DPTR
JNB DOT,T1DIS1
ORL A,#01H
T1DIS1:
CPL A
MOV P0,A
INC SCANLED
MOV A,SCANLED
CJNE A,#6,T1END
MOV SCANLED,#0
T1END:
POP ACC
RETI
;--------------------
CHGKEY:
MOV A,KEYVAL
JZ KV16
DEC A
JNZ KV01
MOV KEYVAL,#7
RET
KV01:
DEC A
JNZ KV02
MOV KEYVAL,#4
RET
KV02:
DEC A
JNZ KV03
MOV KEYVAL,#1
RET
KV03:
DEC A
JNZ KV04
MOV KEYVAL,#10
RET
KV04:
DEC A
JNZ KV05
MOV KEYVAL,#8
RET
KV05:
DEC A
JNZ KV06
MOV KEYVAL,#5
RET
KV06:
DEC A
JNZ KV07
MOV KEYVAL,#2
RET
KV07:
DEC A
JNZ KV08
MOV KEYVAL,#0
RET
KV08:
DEC A
JNZ KV09
MOV KEYVAL,#9
RET
KV09:
DEC A
JNZ KV10
MOV KEYVAL,#6
RET
KV10:
DEC A
JNZ KV11
MOV KEYVAL,#3
RET
KV11:
DEC A
JNZ KV12
MOV KEYVAL,#11
RET
KV12:
DEC A
JNZ KV13
MOV KEYVAL,#12
RET
KV13:
DEC A
JNZ KV14
MOV KEYVAL,#13
RET
KV14:
DEC A
JNZ KV15
MOV KEYVAL,#14
RET
KV15:
DEC A
JNZ KV16
MOV KEYVAL,#15
RET
KV16:
MOV KEYVAL,#0FFH
RET
;--------------------
LEDTAB:DB 0FCH;"0"00H
DB 60H;"1"01H
DB 0DAH;"2"02H
DB 0F2H;"3"03H
DB 66H;"4"04H
DB 0B6H;"5"05H
DB 0BEH;"6"06H
DB 0E0H;"7"07H
DB 0FEH;"8"08H
DB 0F6H;"9"09H
DB 0EEH;"A"0AH
DB 3EH;"B"0BH
DB 9CH;"C"0CH
DB 7AH;"D"0DH
DB 9EH;"E"0EH
DB 8EH;"F"0FH
DB 00H;" "10H
;--------------------
END

⑽ 用51单片机设计一个电子钟

巧了，国亲无聊做了一个玩玩，给你看看把，其实电子钟挺简单的，下面是程序：

#include<reg52.h>

#defineucharunsignedchar

#defineuintunsignedint

sbitch=P3^2;

sbitkey=P3^5;

sbitkey1=P3^4;

uchart0,numn,numy,numr,nums,numf,numm,sw,w,q,b,s,g,sw1,w1,q1,b1,s1,g1,rq,temp,x;

uintu;

voidinit();

voiddisplay(uchar,uchar,uchar,uchar,uchar,uchar);

voiddelay(uintz)

{

uintx,y;

for(x=z;x>0;x--)

for(y=70;y>0;y--);

}

voidmain()

{

init();

while(1)

{

if(rq==1)

{

if(rq==1)

display(sw,w,q,b,s,g);

}

elseif(rq==2)

{

if(rq==2)

display(sw1,w1,q1,b1,s1,g1);

}

elseif(rq==3)

{

if(rq==3)

display(w,w,w,w,w,w);

}

elseif(rq==4)

{

uchari;

temp=0x01;

for(i=0;i<8;i++)

{

P1=~temp;

delay(100);

temp<<=1;

}

temp=0x80;

for(i=0;i<8;i++)

{

P1=~temp;

delay(100);

temp>>=1;

}

temp=0x01;

for(i=0;i<8;i++)

{

P1=temp;

delay(100);

temp<<=1;

}

temp=0x7F;

for(i=0;i<8;i++)

{

P1=temp;

delay(100);

temp>>=1;

}

}

else

rq=1;

}

}

voidinit()

{

rq=1;

x=1;

nums=22;

numf=0;

numm=0;

numn=9;

numy=10;

numr=15;

TMOD=0x11;

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

IT0=1;

IT0=2;

EA=1;

EX0=1;

EX1=1;

ET0=1;

TR0=1;

ET1=1;//IE=0x82//CPU开中断,CT0开中断

}

voidtimer0()interrupt1

{

TH0=(65536-50000)/256;

TL0=(65536-50000)%256;

t0++;

if(key==0)

{

delay(50);

if(key==0)

{

x++;

while(key==0);

}

}

if(x==2&rq==1)

{

//P0=0xf3;

if(key1==0)

{

numf++;

while(key1==0);

}

}

elseif(x==3&rq==1)

{

//P0=0xfc;

if(key1==0)

{

nums++;

while(key1==0);

}

}

elseif(x==2&rq==2)

{

//P0=0xcf;

if(key1==0)

{

numr++;

while(key1==0);

}

}

elseif(x==3&rq==2)

{

//P0=0xf3;

if(key1==0)

{

numy++;

while(key1==0);

}

}

elseif(x==4&rq==2)

{

//P0=0xfc;

if(key1==0)

{

numn++;

while(key1==0);

}

}

else

{

x=1;

}

if(t0==20)

{

t0=0;

numm++;

}

if(numm==60)

{

numm=0;

numf++;

}

if(numf==60)

{

for(u=500;u>0;u--)

{

bell=0;

delay(1);

bell=1;

delay(1);

}

numf=0;

nums++;

}

if(nums==24)

{

nums=0;

numr++;

}

if(numr==30)

{

numr=0;

numy++;

}

if(numy==12)

{

numy=0;

numn++;

}

if(numn==100)

{

numn=0;

}

g=numm%10;

s=numm/10;

b=numf%10;

q=numf/10;

w=nums%10;

sw=nums/10;

g1=numr%10;

s1=numr/10;

b1=numy%10;

q1=numy/10;

w1=numn%10;

sw1=numn/10;

}

voidexert0()interrupt0

{

delay(50);

rq++;

while(ch==0);

}

voidt0int()interrupt3

{

TR1=0;

bell=!bell;

TH1=timer0h;

TL1=timer0l;

TR1=1;

}

voidexert1()interrupt2

{

rq=100;

}

voiddisplay(ucharsw,ucharw,ucharq,ucharb,uchars,ucharg)

{

P2=tab[sw];

P0=tabwe[0];

delay(5);

P0=0xff;

P2=tab[w];

P0=tabwe[1];

delay(5);

P0=0xff;

P2=tab[q];

P0=tabwe[2];

delay(5);

P0=0xff;

P2=tab[b];

P0=tabwe[3];

delay(5);

P0=0xff;

P2=tab[s];

P0=tabwe[4];

delay(5);

P0=0xff;

P2=tab[g];

P0=tabwe[5];

delay(5);

P0=0xff;

}

下面这个是电路图，图我没有画啊，不过我用仿真去做，应该跟电路图差不多了，你可以参考下，可以实现流水灯，闹铃，日期，时间，等功能，上面给你的是按照你的要求，另外我懒得改了所以多了个功能就是可以看日期，你看上面的程序，第一个按钮ch，按一下查看日期，再按一下查看温度（被删了，随机现在是随机显示一个数字），再按一下是流水灯，再按一下又回到时间，另外两个键key/key1；按key是选择锁定分还是时，如果你当前显示的是日期的话就是顺序锁定日，月，年，按key1调整，图上显示的是22点00分09秒，就这样了

设计方案的话..........呵呵，AT89S52+6个数码管+11.0592晶振+2个30P电容+3个按钮+1个10UF电容如图连接，你自己去写方案把，分数给那么少，就只帮你那么多了