计算器__C51源程序

1、.#include <reg52.h>#define uchar unsigned char#define uint unsigned intsbit rs=P00;sbit rw=P01;sbit e=P02;sbit k0=P10;sbit k1=P11;sbit k2=P12;sbit k3=P13;sbit k4=P14;sbit k5=P15;sbit k6=P16;sbit k7=P17;unsigned char code digit ="0123456789" /定义字符数组显示数字unsigned char s,m,h,day,month,ye

2、ar,count;void write_dat(uchar dat); void write_com(uchar com);void keyscan();/* 功能说明：显示编码，加上0x30，分别为'1','2','3','+','4','5','6','-',等*/uchar code table1=1,2,3,0x2b-0x30,4,5,6,0x2d-0x30,7,8,9,0x2a-0x30,0,0x3d-0x30,0x01-0x30,0x2f-0x30;uch

3、ar k=0,flag=0,num,fuhao,i;long a,b,c;void delay(uint z) uint x,y; for(x=z;x>0;x-) for(y=110;y>0;y-);/*函数功能：指定字符显示的实际地址入口参数：x*/ void WriteAddress(unsigned char x) write_com(x|0x80); /显示位置的确定方法规定为"80H+地址码x" /* 函数功能：显示小时 */void DisplayHour() unsigned char i,j;i=h/10; /取整运算，求得十位数字j=h%10;

4、 /取余运算，求得各位数字 WriteAddress(0x45); /写显示地址，将十位数字显示在第2行第0列 write_dat(digiti); /将十位数字的字符常量写入LCD write_dat(digitj); /将个位数字的字符常量写入LCD /* 函数功能：显示分钟 */void DisplayMinute() unsigned char i,j; i=m/10; /取整运算，求得十位数字j=m%10; /取余运算，求得各位数字 WriteAddress(0x48); /写显示地址，将十位数字显示在第2行第3列 write_dat(digiti); /将十位数字的字符常量写入LC

5、D write_dat(digitj); /将个位数字的字符常量写入LCD /* 函数功能：显示秒 */void DisplaySecond() unsigned char i,j; i=s/10; /取整运算，求得十位数字j=s%10; /取余运算，求得各位数字 WriteAddress(0x4b); /写显示地址，将十位数字显示在第2行第6列 write_dat(digiti); /将十位数字的字符常量写入LCD write_dat(digitj); /将个位数字的字符常量写入LCD /* 函数功能：显示小时 */void DisplayYear() unsigned char i,j;i

6、=year/10; /取整运算，求得十位数字j=year%10; /取余运算，求得各位数字 WriteAddress(0x07); /写显示地址，将十位数字显示在第2行第0列 write_dat(digiti); /将十位数字的字符常量写入LCD write_dat(digitj); /将个位数字的字符常量写入LCD /* 函数功能：显示分钟 */void DisplayMonth() unsigned char i,j; i=month/10; /取整运算，求得十位数字j=month%10; /取余运算，求得各位数字 WriteAddress(0x0a); /写显示地址，将十位数字显示在第2

7、行第3列 write_dat(digiti); /将十位数字的字符常量写入LCD write_dat(digitj); /将个位数字的字符常量写入LCD /* 函数功能：显示秒 */void DisplayDay() unsigned char i,j; i=day/10; /取整运算，求得十位数字j=day%10; /取余运算，求得各位数字 WriteAddress(0x0d); /写显示地址，将十位数字显示在第2行第6列 write_dat(digiti); /将十位数字的字符常量写入LCD write_dat(digitj); /将个位数字的字符常量写入LCD void keyscan2

8、()if(k0=0) delay(5); if(k0=0) s+; if(s=60) s=0; if(k1=0) delay(5); if(k1=0) m+; if(m=60) m=0; if(k2=0) delay(5); if(k2=0) h+; if(h=60) h=0; if(k3=0) delay(5); if(k3=0) day+; if(day=30) day=0; if(k4=0) delay(5); if(k4=0) month+; if(month=13) month=0; if(k5=0) delay(5); if(k5=0) year+; if(year=99) yea

9、r=0; void keyscan() uchar temp; P3=0xfe; temp=P3; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P3; temp=temp&0xf0; while(temp!=0xf0) temp=P3; switch(temp) case 0xee:num=0; break; case 0xde:num=1; break; case 0xbe:num=2; break; case 0x7e:num=3; break; while(temp!=0xf0) temp=P3; temp=temp&

10、amp;0xf0; /*当按下1,2,3，松手后执行下面这段语句*/ if(num=0|num=1|num=2) if(flag=0) a=a*10+table1num;/如果没有按符号键,符号前的数值为a else if(flag=1) b=b*10+table1num; /如果按了符号键,符号后的数值为b if(k=1) /如果之前按了'='号,再按键时清屏，进行下一次计算 k=0; write_com(0x01); else if(num=3) /判断按下'+' flag=1; fuhao=1; i=table1num; /显示按下的键 write_dat

11、(0x30+i); P3=0xfd; temp=P3; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P3; temp=temp&0xf0; while(temp!=0xf0) temp=P3; switch(temp) case 0xed:num=4; break; case 0xdd:num=5; break; case 0xbd:num=6; break; case 0x7d:num=7; break; while(temp!=0xf0) temp=P3; temp=temp&0xf0; if(num=4|num

12、=5|num=6) /判断是否按下'4','5','6' if(k=1) k=0; write_com(0x01); if(flag=0) a=a*10+table1num; else if(flag=1) b=b*10+table1num; else if(num=7) flag=1; fuhao=2; i=table1num; /显示按下的键 write_dat(0x30+i); P3=0xfb; temp=P3; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P3; temp=te

13、mp&0xf0; while(temp!=0xf0) temp=P3; switch(temp) / case 0xeb:num=8; break; case 0xdb:num=9; break; case 0xbb:num=10; break; case 0x7b:num=11; break; while(temp!=0xf0) temp=P3; temp=temp&0xf0; if(num=8|num=9|num=10) /判断是否按下'7','8','9' if(k=1) k=0; write_com(0x01); if(f

14、lag=0) a=a*10+table1num; else if(flag=1) b=b*10+table1num; else if(num=11) /判断是否按下'*' flag=1; fuhao=3; i=table1num; write_dat(0x30+i); P3=0xf7; temp=P3; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P3; temp=temp&0xf0; while(temp!=0xf0) temp=P3; switch(temp) case 0xe7:num=12; / 0键

15、 break; case 0xd7:num=13; / '=' break; case 0xb7:num=14; /清零键 break; case 0x77:num=15; /'/' break; while(temp!=0xf0) temp=P3; temp=temp&0xf0; switch(num) case 12: if(k=1) k=0; write_com(0x01); if(flag=0) a=a*10; else if(flag=1) b=b*10; write_dat(0x30); break; case 13: /按=键 k=1; i

16、f(fuhao=1) /如果符号键是+，执行+运算 write_com(0x80+0x4f); write_com(0x04); c=a+b; while(c!=0) write_dat(0x30+c%10); c=c/10; write_dat(0x3d); fuhao=0; a=0;b=0;flag=0; if(fuhao=2) write_com(0x80+0x4f); write_com(0x04); if(a>=b) c=a-b; while(c!=0) write_dat(0x30+c%10); c=c/10; else if(a<b) c=b-a; while(c!=

17、0) write_dat(0x30+c%10); c=c/10; write_dat(0x2d); write_dat(0x3d); a=0;b=0;flag=0;fuhao=0; if(fuhao=3) /如果符号键是* write_com(0x80+0x4f); write_com(0x04); c=a*b; while(c!=0) write_dat(0x30+c%10); c=c/10; write_dat(0x3d); a=0;b=0;flag=0;fuhao=0; if(fuhao=4) /如果符号键是/ i=0; write_com(0x80+0x4f); write_com(0

18、x04); c=(long)(float)a/b)*1000000); /结果保留6位小数 while(c!=0) write_dat(0x30+c%10); c=c/10; i+; if(i=6) / 显示完六位小数后，显示· write_dat(0x2e); if(a/b<=0) write_dat(0x30); write_dat(0x3d); a=0;b=0;flag=0;fuhao=0; break; case 14: write_com(0x01); a=0;b=0;flag=0;fuhao=0; break; case 15: flag=1; fuhao=4; w

19、rite_dat(0x30+table1num); break; /*led1602*/void write_com(uchar com) rs=0;/选择写指令 rw=0; P2=com; e=1; delay(5);/无延时不能正常工作 e=0;void write_dat(uchar dat) rs=1;/选择写数据 rw=0; P2=dat; e=1; delay(5);/无延时不能正常工作 e=0;void init() /初始化 delay(15); write_com(0x38); delay(6); write_com(0x38); delay(6); write_com(0x

20、38); write_com(0x38); write_com(0x0c); /开显示，关光标 write_com(0x06);/光标移动 设置 write_com(0x01);/清屏 void geshi() WriteAddress(0x00); write_dat('D'); WriteAddress(0x01); write_dat('a'); WriteAddress(0x02); write_dat('t'); /将分号的字符常量写入LCD WriteAddress(0x03); write_dat('e'); Wri

21、teAddress(0x04); write_dat(':'); WriteAddress(0x05); write_dat('2');WriteAddress(0x06); write_dat('0'); WriteAddress(0x09); write_dat('-'); WriteAddress(0x0c); write_dat('-'); WriteAddress(0x40); write_dat('T'); WriteAddress(0x41); write_dat('i'

22、;); WriteAddress(0x42); write_dat('m'); WriteAddress(0x43); /写地址，将第二个分号显示在第2行第7列write_dat('e'); /将分号的字符常量写入LCDWriteAddress(0x44); /写地址，将第二个分号显示在第2行第10列write_dat(':'); /将分号的字符常量写入LCD WriteAddress(0x47); write_dat(':'); WriteAddress(0x4a); write_dat(':'); void m

23、ain() init();TMOD=0x01; /使用定时器T0的模式1TH0=(65536-46083)/256; /定时器T0的高8位设置初值TL0=(65536-46083)%256; /定时器T0的低8位设置初值EA=1; /开总中断ET0=1; /定时器T0中断允许TR0=1; /启动定时器T0count=0; /中断次数初始化为0s=0; /秒初始化为0m=0; /分钟初始化为0h=0; /小时初始化为0year=0;month=0;day=0; while(1) keyscan(); if(k6=0) k6=0; write_com(0x01); while(1)keyscan2

24、(); geshi(); delay(5); DisplayHour(); delay(5); DisplayMinute(); delay(5); DisplaySecond(); delay(5); DisplayYear();delay(5); DisplayMonth(); delay(5); DisplayDay();delay(5); if(k7=0) k6=1; write_com(0x01); break; /*函数功能：定时器T0的中断服务函数*/ void Time0(void ) interrupt 1 using 1 /定时器T0的中断编号为1，使用第1组工作寄存器 c

25、ount+; /每产生1次中断，中断累计次数加1 if(count=20) /如果中断次数计满20次 count=0; /中断累计次数清0 s+; /秒加1 if(s=60) /如果计满60秒 s=0; /秒清0 m+; /分钟加1 if(m=60) /如果计满60分 m=0; /分钟清0 h+; /小时加1 if(h=24) h=0; day+; if(day=30) day=0; month+; if(month=13) month=0; year+; if(year=99) year=0; TH0=(65536-46083)/256; /定时器T0高8位重新赋初值 TL0=(65536-

26、46083)%256; /定时器T0低8位重新赋初值 #include "reg52.h"#include <stdio.h>#include <stdlib.h>#include <string.h>#include <math.h>#define uchar unsigned char#define uint unsigned intsbit choose=P34; /时钟和计算器切换sbit buzz=P00;sbit lcdrs=P37;sbit lcdrw=P36;sbit lcden=P35;bit idata f

27、orm;uchar idata state;sbit reset=P30;/复位sbit back=P31;/撤销sbit save=P32;/存储bit idata eqsign;bit idata press;bit idata savesign;bit idata sc;uchar idata process30,proc;uchar idata continu=0;uchar idata pai22;uchar idata ferror;uchar idata ywei; uchar idata count=0;uchar idata count_num=0;uchar idata r

28、esult15;uchar idatasaveresult15;uchar idata jieguo15;uchar idatabdate24;uchar idata on_symbol;uchar idata fsym2;uchar idata ssym2;uchar idata bfun2;uchar idata futojiao2;double idata date2;double idata resultdate;sbit stime=P33;/时间设置uchar idata ms50=0;uchar idata s=0;uchar idata m=0;uchar idata h=0;

29、void delay(uchar z);void write_com(uchar com);void write_date(uchar date);void read_date(void);void write_str(uchar *str);void init(void);void shift(void);uchar keyscan(void);void fuwei(void);void callerror(void);void huifu(void);uchar funqian(void);void cullars(uchar);char memory(void);void process

30、_date(uchar press_date);void calculator(uchar press_date);void settime(void);void Timer0(void);void time(void);void delay(uchar z)uchar x,y;for(x=z;x>0;x-) for(y=200;y>0;y-);void bell(void)buzz=0;delay(100);buzz=1;void write_com(uchar com)lcdrs=0;lcdrw=0;lcden=0;P1=com;delay(5);lcden=1;delay(5

31、); lcden=0;void write_date(uchar date)lcdrs=1;lcdrw=0;lcden=0;P1=date;delay(5);lcden=1;delay(5);lcden=0;void read_date(void)lcdrs=0;lcdrw=1;delay(5);P1=0XFF;lcden=1;delay(5);state=P1;delay(5);lcden=0;delay(5);state=state&127;void write_str(uchar *str)uchar idata i;for(i=0;stri!='0'i+)wri

32、te_date(stri);void init(void)write_com(0x38);write_com(0x0c);write_com(0x06);write_com(0x01);void shift(void)if(sc=1)read_date();write_com(0xc0);write_date('f');write_com(state+0x80);elseread_date();write_com(0xc0);write_date(' ');write_com(state+0x80);return;uchar keyscan(void)uchar

33、 idata key0,key1,keyment=0;P2=0X0FE;key0=P2;key0=key0&0x0f0;key1=key0;if(key0!=0xf0)delay(5);P2=0X0FE;key0=P2;key0=key0&0xf0;if(key0=key1)switch(key0)case 0xe0:keyment='7'bell();break;case 0xd0:keyment='8'bell();break;case 0xb0:keyment='9'bell();break;case 0x70:keyment=0xfd;bell();break;while(key0!=0x0f0) key0=P2; key0=key0&0x0f0; press=1; return(keyment); P2=0X0FD; key0=P2; key0=key0&0x0f0; key1=key0; if(key0!=0x0f0) delay(5); P2=0X0Fd; key0=P2; key0=key0&0xf0; if(key0=