单片机计算器程序 - - Powered by Discuz!

标题: 单片机计算器程序 [打印本页]

作者: ccd 时间: 2008-6-10 12:23
标题: 单片机计算器程序

高手老手们，谁能帮我完善一下这个单片机计算器程序呀c51！我这只能算了10以内的，要能算10以外的加算法该怎么办呀！帮下忙呀！



#include <reg52.h>
#include <intrins.h>
sbit RS=0xB0^6;
sbit RW=0xa0^5;
sbit E=0xa0^6;
#define LCM_RW  RW //定义引脚
#define LCM_RS  RS
#define LCM_E   E
#define LCM_Data  P0
#define Busy    0x80 //用于检测LCM状态字中的Busy标识
unsigned char n=0;
unsigned char one[17];
unsigned char two[17];
unsigned char code jianma[16]={0xee,0xde,0xbe,0x7e,0xed,0xdd,0xbd,0x7d,0xeb,0xdb,0xbb,0x7b,0xe7,0xd7,0xb7,0x77};
void WriteDataLCM(unsigned char WDLCM);
void WriteCommandLCM(unsigned char WCLCM,BuysC);
unsigned char ReadDataLCM(void);
unsigned char ReadStatusLCM(void);
void LCMInit(void);
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char  *DData);
void Delay5Ms(void);
void Delay400Ms(void);
void disp(void)
{
DisplayListChar(0,0,one);
}

//写数据
void WriteDataLCM(unsigned char WDLCM)
{
 ReadStatusLCM(); //检测忙
 LCM_Data = WDLCM;
 LCM_RS = 1;
 LCM_RW = 0;
 LCM_E = 0; //若晶振速度太高可以在这后加小的延时
 LCM_E = 0; //延时
 LCM_E = 1;
}

//写指令
void WriteCommandLCM(unsigned char WCLCM,BuysC) / ysC为0时忽略忙检测
{
 if (BuysC) ReadStatusLCM(); //根据需要检测忙
 LCM_Data = WCLCM;
 LCM_RS = 0;
 LCM_RW = 0;
 LCM_E = 0;
 LCM_E = 0;
 LCM_E = 1;
}

//读数据
unsigned char ReadDataLCM(void)
{
 LCM_RS = 1;
 LCM_RW = 1;
 LCM_E = 0;
 LCM_E = 0;
 LCM_E = 1;
 return(LCM_Data);
}

//读状态
unsigned char ReadStatusLCM(void)
{
 LCM_Data = 0xFF;
 LCM_RS = 0;
 LCM_RW = 1;
 LCM_E = 0;
 LCM_E = 0;
 LCM_E = 1;
 while (LCM_Data & Busy); //检测忙信号
 return(LCM_Data);
}

void LCMInit(void) //LCM初始化
{
 LCM_Data = 0;
 WriteCommandLCM(0x38,0); //三次显示模式设置，不检测忙信号
 Delay5Ms();
 WriteCommandLCM(0x38,0);
 Delay5Ms();
 WriteCommandLCM(0x38,0);
 Delay5Ms();

 WriteCommandLCM(0x38,1); //显示模式设置,开始要求每次检测忙信号
 WriteCommandLCM(0x08,1); //关闭显示
 WriteCommandLCM(0x01,1); //显示清屏
 WriteCommandLCM(0x06,1); // 显示光标移动设置
 WriteCommandLCM(0x0C,1); // 显示开及光标设置
}

//按指定位置显示一个字符
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData)
{
 Y &= 0x1;
 X &= 0xF; //限制X不能大于15，Y不能大于1
 if (Y) X |= 0x40; //当要显示第二行时地址码+0x40;
 X |= 0x80; //算出指令码
 WriteCommandLCM(X, 0); //这里不检测忙信号，发送地址码
 WriteDataLCM(DData);
}

//按指定位置显示一串字符
void DisplayListChar(unsigned char X, unsigned char Y, unsigned char  *DData)
{
 unsigned char ListLength;

  ListLength = 0;
 Y &= 0x1;
 X &= 0xF; //限制X不能大于15，Y不能大于1
 while (DData[ListLength]!='\0') //若到达字串尾则退出
  {
   if (X <= 0xF) //X坐标应小于0xF
    {
     DisplayOneChar(X, Y, DData[ListLength]); //显示单个字符
     ListLength++;
     X++;
    }
  }
}

//5ms延时
void Delay5Ms(void)
{
 unsigned int TempCyc = 5552;
 while(TempCyc--);
}
//400ms延时
void Delay400Ms(void)
{
 unsigned char TempCycA = 5;
 unsigned int TempCycB;
 while(TempCycA--)
 {
  TempCycB=7269;
  while(TempCycB--);
 };
}

void dlms(void)
{
unsigned int j;
for(j=500;j>0;j--)
{}
}
unsigned char kbscan(void)
{unsigned char sccode,recode;
P1=0xf0;
if((P1&0xf0)!=0xf0)
{ dlms();
if((P1&0xf0)!=0xf0)
{sccode=0xfe;
while((sccode&0x10)!=0)
{
P1=sccode;
if((P1&0xf0)!=0xf0)
 {recode=P1&0xf0;
 sccode=sccode&0x0f;
wait: P1=0xf0;
 if((P1&0xf0)!=0xf0)
 goto wait;
 else
 return(sccode+recode);
}
else
sccode=(sccode<<1)|0x01;
}
}

}
 return(0) ;

}

void delay (unsigned char m)   //控制频率延时,基本延时为1ms
{
 unsigned i=m;
 while(--i);
}

void delayms(unsigned char a)  //毫秒延时子程序
{
  while(--a);      //采用while(--a) 不要采用while(a--);
}
unsigned char panduanshuzi(unsigned char k)
{ unsigned char i;
  switch(k)
{case 0xee:
 i=1;break;
 case 0xde:
 i=2;break;
 case 0xbe:
 i=3;break;
 case 0x7e:
 i=4;break;
 case 0xed:
 i=5;break;
 case 0xdd:
 i=6;break;
 case 0xbd:
 i=7;break;
 case 0x7d:
 i=8;break;
 case 0xeb:
 i=9;break;
 case 0xd7:
 i=0;break;
 default:i=10;
 }
 return(i);
}
unsigned char panduanfuhao(unsigned char m)
{ unsigned char i;
  switch(m)
{case 0xdb:
 i='+';break;
 case 0xbb:
 i='-';break;
 case 0x7b:
 i='*';break;
 case 0xe7:
 i='/';break;
 default:i=0;
 }
 return(i);
}
main()
{unsigned char a,b,c,d,k,clr;
unsigned int a1,b1,c1,d1,e,e1,e2;
start: Delay400Ms(); //启动等待，等LCM进入工作状态
 LCMInit(); //LCM初始化
 Delay5Ms();
 a=0;
 b=0;
 c=0;
 d=0;
 e=0;
 a1=0;
 b1=0;
 c1=0;
 d1=0;
 e1=0;
 e2=0;
 k=0;
while(1)
{k=kbscan();
if(k!=0)
{a=k;
 a1=panduanshuzi(a);
 if(a1!=10)
 {
 one[0]=a1+0x30;
 one[1]='\0';
DisplayListChar(0,0,one);
};
fuhao: b=kbscan();
 if(b==0)
 goto fuhao;
 b1=panduanfuhao(b);
 if(b1!=0)
 {one[1]=b1;
 one[2]='\0';
DisplayListChar(0,0,one);
}
secdata: c=kbscan();
 if(c==0)
 goto secdata;
 c1=panduanshuzi(c);
 if(c1!=10)
 {one[2]=c1+0x30;
 one[3]='\0';
DisplayListChar(0,0,one); };
equ: d=kbscan();
if (d!=0xb7)
goto equ;
one[3]='=';
switch(b1)
{case '+':
{e=a1+c1;
one[4]=' ';}
break;
case '-':
{if(a1>=c1)
{e=a1-c1;
one[4]=' ';}
else {e=c1-a1;
one[4]='-';}};break;
case '*':
{
e=a1*c1;
one[4]=' ';}break;
case '/':
{
e=a1/c1;
one[4]=' ';}break;
default:e=0;}
e1=e/10;
e2=e%10;
e1=e1+0x30;
e2=e2+0x30;
one[5]=e1;
one[6]=e2;
one[7]='\0';
DisplayListChar(0,0,one);
clr1:clr=kbscan();
if(clr!=0x77)
goto clr1;
else
{ //启动等待，等LCM进入工作状态
 LCMInit(); //LCM初始化
 Delay5Ms();
 break;}
}
}
}

http://www.51hei.com 里面也有一个计算机程序好像也不大好用。

作者: xb_crazyman 时间: 2008-6-10 12:42

相同位数的数相加取余为该位数字，除10为下一位数字

作者: ywz364kf 时间: 2008-6-18 20:49

好长看不懂

作者: tangjin 时间: 2008-9-3 09:25
有没有科学计算器的程序啊，谢谢

作者: nglmh2006 时间: 2008-9-3 23:37
大哥,都用上了C语言了,小弟还不会呀!
佩服佩服!
教教小弟!

作者: cqjamwh 时间: 2008-9-4 10:40
不会啊

作者: eplay 时间: 2008-10-14 22:23

很好，很强大拷了。

作者: eplay 时间: 2008-10-14 22:26


从网上找的没有实践过；

/*--------------------------------------
计算器源程序
Calculator progarm V1.0
MCU STC89C52RC  XAL 12MHz
Build by Gavin Hu, 2007.11.23
--------------------------------------*/
#include <reg51.h>
//
#define uchar unsigned char
#define uint unsigned int
#define ulong unsigned long 

#define MAX_NUM 99999992.0
#define MIN_NUM -9999992.0 

sbit BUZZ=P3^7;
uchar dec_flag; 

void delay(uint);
void display(uchar*);
uchar key_scan(uint);
uchar add_number(uchar*,uchar);
float str2float(uchar*);
uchar float2str(uchar*,float);
float calcu(float,float,uchar);
void err_sound(void); 

/*--------------------------------------
  main function
--------------------------------------*/
void main(void)
{
uchar kk,mm,err,lk,d1ok,ec;
uchar dispram[9];
float d1,d2; 

err=0;
d1ok=0;
ec=0;
mm=0;
dec_flag=0;
d1=0.0;
d2=0.0;
float2str(dispram,d1);
BUZZ=0;
for (kk=10;kk;kk--) display(dispram);
BUZZ=1; 

while (!err)
    {
    display(dispram);
    kk=key_scan(((uint)(P3)<<8)|P1);
    if (kk!=0xff)
        {
        BUZZ=0;
        display(dispram);
        BUZZ=1;
        switch (kk)
            {
            case 0: if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,7);
                    lk=0; ec=0; break;
            case 1: if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,8);
                    lk=0; ec=0; break;
            case 2: if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,9);
                    lk=0; ec=0; break;
            case 3: if (!d1ok) {d1=str2float(dispram); d1ok=1;}
                        else if (lk!=1) {d2=str2float(dispram); d1=calcu(d1,d2,mm);}
                    kk=float2str(dispram,d1);
                    if ((d1==0xffffffff)||(kk==0xff)) {err=1; break;}
                    lk=1; mm=4; ec=0; break;
            case 4: if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,4);
                    lk=0; ec=0; break;
            case 5: if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,5);
                    lk=0; ec=0; break;
            case 6: if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,6);
                    lk=0; ec=0; break;
            case 7: if (!d1ok) {d1=str2float(dispram); d1ok=1;}
                        else if (lk!=1) {d2=str2float(dispram); d1=calcu(d1,d2,mm);}
                    kk=float2str(dispram,d1);
                    if ((d1==0xffffffff)||(kk==0xff)) {err=1; break;}
                    lk=1; mm=3; ec=0; break;
            case 8: if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,1);
                    lk=0; ec=0; break;
            case 9: if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,2);
                    lk=0; ec=0; break;
            case 10:if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,3);
                    lk=0; ec=0; break;
            case 11:if (!d1ok) {d1=str2float(dispram); d1ok=1;}
                        else if (lk!=1) {d2=str2float(dispram); d1=calcu(d1,d2,mm);}
                    kk=float2str(dispram,d1);
                    if ((d1==0xffffffff)||(kk==0xff)) {err=1; break;}
                    lk=1; mm=2; ec=0; break;
            case 12:if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,0);
                    lk=0; ec=0; break;
            case 13:if (lk) {float2str(dispram,0.0); dec_flag=0;}
                    add_number(dispram,10);
                    lk=0; ec=0; break;
            case 14:if (!d1ok) {d1=str2float(dispram); d1ok=1;}
                        else if (lk!=1) {d2=str2float(dispram); d1=calcu(d1,d2,mm);}
                    kk=float2str(dispram,d1);
                    if ((d1==0xffffffff)||(kk==0xff)) {err=1; break;}
                    lk=1; mm=1; ec=0; break;
            case 15:if (ec==0)
                        {
                        if (!d1ok) d1=str2float(dispram);
                            else {d2=str2float(dispram); d1=calcu(d1,d2,mm); ec=1;}
                        }
                        else {d1=calcu(d1,d2,mm);}
                    kk=float2str(dispram,d1);
                    if ((d1==0xffffffff)||(kk==0xff)) {err=1; break;}
                    lk=2; d1ok=0; break;
            }
        while ((P1&P3)!=0xff) display(dispram);
        }
    }
dispram[0]=14;
for (kk=1;kk<8;kk++) dispram[kk]=17;
dispram[8]=255;
err_sound();
while (1)
    {
    display(dispram);
    kk=key_scan(((uint)(P3)<<8)|P1);
    if (kk!=0xff)
        {
        err_sound();
        while ((P1&P3)!=0xff) display(dispram);
        }
    }
} 

/*--------------------------------------
  Delay function
  Parameter: unsigned int dt
  Delay time=dt(ms)
--------------------------------------*/
void delay(unsigned int dt)
{
register unsigned char bt,ct;
for (; dt; dt--)
    for (ct=2;ct;ct--)
        for (bt=250; --bt; );
} 

/*--------------------------------------
  8 LED digital tubes display function
  Parameter: sting pointer to display
--------------------------------------*/
void display(uchar*disp_ram)
{
unsigned char i;
unsigned char code table[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,0xbf,0xff};
for (i=0;i<8;i++)
    {
    if (disp_ram[8]==i) P0 =table[disp_ram]&0x7f;
        else P0 =table[disp_ram];
    P2 =0x01<<i;
    delay(2);
    P0 =0xff;
    P2 =0;
    }
} 

/*--------------------------------------
  Key scan function
  Parameter key port state word
  Return key number,255 no key press
--------------------------------------*/
uchar key_scan(uint key_port)
{
unsigned char i;
for (i=0;i<16;i++)
    {
    if (!(key_port&0x0001)) return i;
    key_port >>=1;
    key_port |=0x8000;
    }
return 0xff;
} 

/*--------------------------------------
  Add number (input figures) function
  Parameter:pointer for result,new number
  Retrun:0 fail,other ok
--------------------------------------*/
uchar add_number(uchar*ch,uchar num)
{
uchar i;
if (ch[0]!=17) return 0;
if (num==10)
    if (!dec_flag)
        {dec_flag=1;return 2;}
        else return 0;
if ((!dec_flag)&&(ch[7]==0)&&(ch[6]==17)) {ch[7]=num;return 1;}
for (i=0;i<7;i++) ch=ch[i+1];
ch[7]=num;
ch[8]-=dec_flag;
return 1;
} 

/*--------------------------------------
  String to float function
  Parameter:pointer of string
  Return result, 0xffffffff fail
--------------------------------------*/
float str2float(uchar*ch)
{
uchar i,ng;
float dt,ft;
ng=0;
dt=0.0;
ft=1.0;
i=ch[8];
do  {
    if (ch>9)
        {
        if (ch==16) ng=1;
        break;
        }
    dt+=ch*ft;
    ft*=10.0;
    } while (i--);
ft=0.1;
for (i=ch[8]+1;i<8;i++)
    {
    dt+=ch*ft;
    ft/=10.0;
    }
if (ng) dt*=-1.0;
if ((dt>MAX_NUM)||(dt<MIN_NUM)) return 0xffffffff;
    else return dt;
} 

接下一个

作者: eplay 时间: 2008-10-14 22:26

由于太大只能分两次法了 /*-------------------------------------- Float to string function Parameter:pointer for result,data to convert Retrun:0 ok,255 fail --------------------------------------*/ uchar float2str(uchar*ch,float dt) { uchar i,ng; float f; if ((dt>MAX_NUM)||(dt<MIN_NUM)) return 0xff; ng=0; if (dt<0.0) {dt*=-1.0; ng=1;} f=10000000.0; for (i=0;i<7;i++) { if ((dt/f)>=1.0) break; else f/=10.0; } for (i=0;i<8;i++) { ch=(uchar)(dt/f); dt -=f*ch; if (f==1.0) {ch[8]=i;} f/=10.0; } if (ch[0]>9) return 0xff; if (ng) { for (i=7;i;i--) ch=ch[i-1]; ch[0]=16; ch[8]++; } while ((ch[7]==0)&&(ch[8]<7)) { for (i=7;i;i--) { ch=ch[i-1]; } ch[0]=17; ch[8]++; } if ((ch[6]==16)&&(ch[7]==0)) ch[6]=17; return 0; } /*-------------------------------------- Calculate function Parameter:data1,data2,mathod Return result --------------------------------------*/ float calcu(float a,float b,uchar m) { float dt; switch (m) { case 1: dt=a+b; break; case 2: dt=a-b; break; case 3: dt=a*b; break; case 4: if (b==0.0) return 0xffffffff; else dt=a/b; break; } if ((dt>MAX_NUM)||(dt<MIN_NUM)) return 0xffffffff; else return dt; } /*-------------------------------------- Err sound function --------------------------------------*/ void err_sound(void) { uchar i; BUZZ=0; delay(500); for (i=0;i<5;i++) { BUZZ=!BUZZ; delay(100); } }

作者: wujiamin 时间: 2009-6-15 20:52
真的是看不懂啊,怎么没有原理图啊
作者: нáпの゛ 时间: 2009-8-2 18:15

没电路图啊。。。。
作者: 123456@654321 时间: 2016-6-8 22:50
这个应该行#include <reg52.h> #define uchar unsigned char #define uint unsigned int sbit rs=P2^2; sbit rw=P2^1; sbit e=P2^0; void write_dat(uchar dat); void write_com(uchar com); void process(void); void keyscan(); /*按键功能*/ uchar code table1[]= { 1,2,3,0x2b-0x30, // 1, 2, 3, + 4,5,6,0x2d-0x30, // 4, 5, 6, - 7,8,9,0x2a-0x30, // 7, 8, 9, x 0,0x3d-0x30,0x01-0x30,0x2f-0x30 // 0, =, 清零, / }; uchar k=0,flag=0,num,fuhao[6],i,temp1=0,flag1=0; long a,b,c,d; void delay(uint z) { uint x,y; for(x=z;x>0;x--) for(y=110;y>0;y--); } /********按键处理***********/ 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) // 松手检测 { temp=P3; temp=temp&0xf0; } } if(num==0||num==1||num==2) { if(flag==0) a=a*10+table1[num]; //如果没有按符号键,符号前的数值为a else if(flag==1) b=b*10+table1[num]; //如果按了符号键,符号后的数值为b else if(temp1>=2&&flag1==1) { flag=1; flag1=0; process(); a=c; b=table1[num]; } if(k==1) { k=0; write_com(0x01); } } else if(num==3) { flag++; flag1=1; temp1++; fuhao[temp1-1]=1; } i=table1[num]; //显示按下的键 write_dat(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==5||num==6) { if(k==1) { k=0; write_com(0x01); } if(flag==0) a=a*10+table1[num]; else if(flag==1) b=b*10+table1[num]; else if(temp1>=2&&flag1==1) { flag=1; flag1=0; process(); a=c; b=table1[num]; } } else if(num==7) { flag++; temp1++; flag1=1; fuhao[temp1-1]=2; } i=table1[num]; write_dat(0x30+i); } P3=0xfb; temp=P3; temp=temp&0xf0; while(temp!=0xf0) { delay(5); temp=P3; temp=temp&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) { if(k==1) { k=0; write_com(0x01); } if(flag==0) a=a*10+table1[num]; else if(flag==1) b=b*10+table1[num]; else if(temp1>=2&&flag1==1) { flag=1; flag1=0; process(); a=c; b=table1[num]; } } else if(num==11) { flag++; temp1++; flag1=1; fuhao[temp1-1]=3; } i=table1[num]; 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 break; case 0xd7:num=13; // '=' break; case 0xb7:num=14; //清零键 break; case 0x77:num=15; //除号键 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; else if(temp1>=2&&flag1==1) { flag=1; flag1=0; process(); a=c; b=table1[num]; } write_dat(0x30); } break; case 13: { k=1; if(temp1>=2) fuhao[0]=fuhao[temp1-1]; if(fuhao[0]==1) { write_com(0x80+0x4f); write_com(0x04); c=a+b; d=c; while(c!=0) { write_dat(0x30+c%10); c=c/10; } write_dat(0x3d); fuhao[0]=0;fuhao[1]=0;fuhao[2]=0; fuhao[3]=0;fuhao[4]=0;fuhao[5]=0; a=0;b=0;flag=0;flag1=0;temp1=0; } if(fuhao[0]==2) { write_com(0x80+0x4f); write_com(0x04); if(a>=b) { c=a-b; d=c; while(c!=0) { write_dat(0x30+c%10); c=c/10; } } else if(a<b) { c=b-a; d=c; while(c!=0) { write_dat(0x30+c%10); c=c/10; } write_dat(0x2d); } write_dat(0x3d); fuhao[0]=0;fuhao[1]=0;fuhao[2]=0; fuhao[3]=0;fuhao[4]=0;fuhao[5]=0; a=0;b=0;flag=0;flag1=0;temp1=0; } if(fuhao[0]==3) { write_com(0x80+0x4f); write_com(0x04); c=a*b; d=c; while(c!=0) { write_dat(0x30+c%10); c=c/10; } write_dat(0x3d); fuhao[0]=0;fuhao[1]=0;fuhao[2]=0; fuhao[3]=0;fuhao[4]=0;fuhao[5]=0; a=0;b=0;flag=0;flag1=0;temp1=0; } if(fuhao[0]==4) { i=0; write_com(0x80+0x4f); write_com(0x04); c=(long)(((float)a/b)*1000000); d=c; while(c!=0) { write_dat(0x30+c%10); c=c/10; i++; if(i==6) write_dat(0x2e); } if(a/b<=0) write_dat(0x30); write_dat(0x3d); fuhao[0]=0;fuhao[1]=0;fuhao[2]=0; fuhao[3]=0;fuhao[4]=0;fuhao[5]=0; a=0;b=0;flag=0;flag1=0;temp1=0; } } break; case 14: { write_com(0x01); a=0;b=0;flag=0;temp1=0;flag1=0; fuhao[0]=0;fuhao[1]=0;fuhao[2]=0; fuhao[3]=0;fuhao[4]=0;fuhao[5]=0; } break; case 15: { flag++; temp1++; flag1=1; fuhao[temp1-1]=4; write_dat(0x30+table1[num]); } break; } } } /*******led1602显示*******/ void write_com(uchar com) { rs=0; rw=0; P0=com; e=1; delay(5); e=0; } void write_dat(uchar dat) { rs=1; rw=0; P0=dat; e=1; delay(5); e=0; } void process(void) { if(fuhao[temp1-2]==1) //如果符号键是+，执行加法运算 { c=a+b; b=0; } // 如果符号键是-，执行减法运算 if(fuhao[temp1-2]==2) { c=a-b; b=0; } if(fuhao[temp1-2]==3) //如果符号键是*执行乘法运算 { c=a*b; b=0; } if(fuhao[temp1-2]==4) //如果符号键是/ 执行除法运算 { c=(long)((float)a/b); b=0; } } /*液晶的初始化*/ void init() //初始化 { delay(15); write_com(0x38); delay(6); write_com(0x38); delay(6); write_com(0x38); write_com(0x38); write_com(0x0c); //开显示，关光标 write_com(0x06); //光标移动 write_com(0x01); //清屏 } void main() { init(); while(1) { keyscan(); } }
作者: aguangx 时间: 2016-6-9 22:58
很好很强大

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