jisuanqi.zip_小数计算器_小数运算_计算器 小数_计算器+小数_计算器小数

#include <reg52.h> #include<math.h> #include<key.h> #define uchar unsigned char #define uint unsigned int #define LINE1 0 #define LINE2 1 #define LINE1_HEAD 0x80 #define LINE2_HEAD 0xC0 #define LCD_DELAY_TIME 40 #define DATA_MODE 0x38 #define OPEN_SCREEN 0x0C #define DISPLAY_ADDRESS 0x80 #define CLR 0x01 #define BUSY 0x80 //LCD Busy Tag #define LCDIO P1 sbit LCD1602_RS=P3^5; //Data Command Pin 1 data 0 command pin 4 sbit LCD1602_RW=P3^4; //Read Write Pin 1 read 0 write pin 5 sbit LCD1602_EN=P3^7; //LCD Enable Signal pin 6 /****************************************************************/ void LCD_command(unsigned char command,unsigned char BusyC); //write command function void LCD_data(unsigned char temp,unsigned char BusyC); //write data function void LCD_set_xy( unsigned char x, unsigned char y ); //set display address function void LCD_write_char( unsigned x,unsigned char y,unsigned char dat);//write lcd a character function void LCD_init(void); //lcd initize function uchar flag=1,pfu=0,fu=0,position1=0,position2=0,kind=0,yes=0,yes1=0,flag1=0,dian1=0,dian2=0,k=0,kind1,yym=1,kind2=0; unsigned long xdata data1=0,data2=0,data3=0,ddata=0; double dd1,dd2,dd3,dda; uchar key11=0x99; uchar rrr=0xff; uchar t=0; unsigned char ReadStatus(void); void delay_400ms(void); //delay function uchar xdata alldata[15]={0}; uchar xdata love[13]={0}; void prodis(void); unsigned long shi(uchar n); void dy(void); void xianshi(void); void xiaoshu(void); void remove0(void); void remove1(void); void error(void); uchar xdata tab_num[]="0123456789. "; /********************************************************************/ void main(void) {uint key; uint t=0; LCD_init(); while(1) { key=kbscan(); switch(key) { case 0xee: key11=0x00;break; // 1110 1110 case 0xde: key11=0x01;break; // 1101 1110 case 0xbe: key11=0x02;break; // 1011 1110 case 0x7e: key11=0x03;break; // 0111 1110 case 0xed: key11=0x04;break; // 1110 1101 case 0xdd: key11=0x05;break; // 1101 1101 case 0xbd: key11=0x06;break; // 1011 1101 case 0x7d: key11=0x07;break; // 0111 1101 case 0xeb: key11=0x08;break; // 1110 1011 case 0xdb: key11=0x09;break; // 1101 1011 case 0xbb: key11=0x10;break; // 1011 1011 case 0x7b: key11=0x11;break; // 0111 1011 case 0xe7: key11=0x12;break; // 1110 0111 case 0xd7: key11=0x13;break; // 1101 0111 case 0xb7: key11=0x14;break; // 1011 0111 case 0x77: key11=0x15;break; // 0111 0111 default: break; } prodis(); if(key11==0x01){LCD_write_char(rrr,LINE1,tab_num[0]);alldata[rrr]=0;key11=0x99;} if(key11==0x04){LCD_write_char(rrr,LINE1,tab_num[1]);alldata[rrr]=1;key11=0x99;} if(key11==0x05){LCD_write_char(rrr,LINE1,tab_num[2]);alldata[rrr]=2;key11=0x99;} if(key11==0x06){LCD_write_char(rrr,LINE1,tab_num[3]);alldata[rrr]=3;key11=0x99;} if(key11==0x08){LCD_write_char(rrr,LINE1,tab_num[4]);alldata[rrr]=4;key11=0x99;} if(key11==0x09){LCD_write_char(rrr,LINE1,tab_num[5]);alldata[rrr]=5;key11=0x99;} if(key11==0x10){LCD_write_char(rrr,LINE1,tab_num[6]);alldata[rrr]=6;key11=0x99;} if(key11==0x12){LCD_write_char(rrr,LINE1,tab_num[7]);alldata[rrr]=7;key11=0x99;} if(key11==0x13){LCD_write_char(rrr,LINE1,tab_num[8]);alldata[rrr]=8;key11=0x99;} if(key11==0x14){LCD_write_char(rrr,LINE1,tab_num[9]);alldata[rrr]=9;key11=0x99;} if(key11==0x00){LCD_write_char(rrr,LINE1,0x2e);alldata[rrr]=0x2e;yym=0;key11=0x99;} if(key11==0x03){LCD_write_char(rrr,LINE1,0x2b);position1=rrr;kind1=1;kind=1;key11=0x99;} if(key11==0x07){LCD_write_char(rrr,LINE1,0x2d);position1=rrr;kind1=2;kind=2;key11=0x99;} if(key11==0x11){LCD_write_char(rrr,LINE1,0x2a);position1=rrr;kind1=3;kind=3;key11=0x99;} if(key11==0x15){LCD_write_char(rrr,LINE1,0x2f);position1=rrr;kind1=4;kind=4;kind2=4;key11=0x99;} if(key11==0x02){LCD_write_char(rrr,LINE1,0x3d);position2=rrr;if(yym==0){xiaoshu();}else{dy();}if(yes==1||yes1==1){error();}else{xianshi();}if(flag1==1){remove1();}else{remove0();}key11=0x99;} delay_400ms();delay_400ms(); } } // void LCD_command(unsigned char command,unsigned char BusyC)//写指令 { if (BusyC) ReadStatus(); //Test it busy or not LCDIO=command; LCD1602_RS=0; LCD1602_RW=0; LCD1602_EN=0; LCD1602_EN=0; LCD1602_EN=1; } // // // void LCD_data(unsigned char dat,unsigned char BusyC)//写数据 { if (BusyC) ReadStatus(); //Test it busy or not LCDIO=dat; LCD1602_RS=1; LCD1602_RW=0; LCD1602_EN=0; LCD1602_EN=0; LCD1602_EN=1; } void LCD_set_xy( unsigned char x, unsigned char y )//显示位置 { unsigned char address; if (y == LINE1) address = LINE1_HEAD + x; else address = LINE2_HEAD + x; LCD_command(address,1); } // // // void LCD_write_char( unsigned x,unsigned char y,unsigned char dat) { LCD_set_xy( x, y ); LCD_data(dat,1); } // // void LCD_init(void) { delay_400ms(); LCD_command(CLR,0);//clear screen LCD_command(DATA_MODE,1);//set 8 bit data transmission mode LCD_command(OPEN_SCREEN,1);//open display (enable lcd display) LCD_command(DISPLAY_ADDRESS,1);//set lcd first display address LCD_command(CLR,1); //clear screen } // // void delay_400ms(void) { unsigned char i = 5; unsigned int j; while(i--){ j=7269; while(j--); }; } // // unsigned char ReadStatus(void)//读状态 { LCDIO = 0xFF; LCD1602_RS = 0; LCD1602_RW = 1; LCD1602_EN = 0; LCD1602_EN = 0; LCD1602_EN = 1; while (LCDIO & BUSY); //Test Busy State return(LCDIO); } void prodis(void) {if((P2&0xf0)!=0xf0) {delays(); //延时去抖动（10ms） if((P2&0xf0)!=0xf0) //再次判断列中是否是干扰信号，不是则向下执行 { rrr++; if(rrr==15) {rrr=15;} } } } void dy(void) {uchar k; if((position1==0) || (position2==(position1+1))) yes=1; else { for(k=0;k<position1;k++) { ddata=shi(position1-1-k); data1=data1+(alldata[k])*ddata; } for(k=position1+1;k<position2;k++) { ddata=shi(position2-1-k); data2=data2+(alldata[k])*ddata; } } if(kind==1){data3=data1+data2;} if(kind==2){if(data1<data2){ddata=data1;data1=data2;data2=ddata;fu=1;data3=data1-data2;}else data3=data1-data2;} if(kind==3){data3=data1*data2;if(data1>65535||data2>65535){yes=1;}} if(kind==4){data3=data1/data2;flag1=1;} love[0]=data3 / 1000000000; love[1]=data3 % 1000000000/100000000; love[2]=data3 % 100000000/10000000; love[3]=data3 % 10000000/1000000; love[4]=data3 % 1000000/100000; love[5]=data3 % 100000/10000; love[6]=(data3 % 10000)/1000; love[7]=(data3 % 1000)/100; love[8]=(data3 % 100)/10; love[9]= data3 % 10; if(kind==4) { love[10]=10; love[11]=((data1 % data2)*10)/data2; love[12]=((((data1 % data2)*10)%data2)*10)/data2; love[13]=((((((data1 % data2)*10)%data2)*10)%data2)*10)/data2; } } void xiaoshu(void) {uchar k,t=0; int i; position1=position1-1; position2=position2-1; for(k=0;k<position1;k++) { if(alldata[k]==0x2e) {dian1=k; for(i=k;i<position1;i++) {alldata[i]=alldata[i+1];} } } if(dian1!=0) { for(k=0;k<position1;k++) { ddata=shi(position1-1-k); data1=data1+(alldata[k])*ddata; } ddata=shi(position1-dian1); dd1=( double )data1/ddata; } if(dian1==0){ for(k=0;k<position1+1;k++) { ddata=shi(position1-k); data1=data1+(alldata[k])*ddata; } dd1=(double)data1;} for(k=position1+1;k<position2;k++) { if(alldata[k]==0x2e){ dian2=k; for(i=k;i<position2;i++) {alldata[i]=alldata[i+1];} } } if(dian2!=0) { for(k=position1+1;k<position2;k++) { ddata=shi(position2-1-k); data2=data2+(alldata[k])*ddata; } ddata=shi(position2-dian2); dd2=( double )data2/ddata; } if(d