51單片機簡易計算器仿真原理圖如下（proteus仿真工程文件可到本帖附件中下載）
單片機源程序如下:
- #include"reg52.h"
- #include"math.h"
- #define uchar unsigned char
- #define uint unsigned int
- #define key P3
- #define duan P2
- #define wei P1
- sbit led=P0^0;
- sbit buzzer=P0^1;
- uchar num,temp,num1,i=0;
- long bczs=0,czs=0,jiguo=0,jiguo1=0;
- uchar czs12=1; //輸入數的選擇標志位，１為第一個數，２為第二個數
- uchar yiweiflag,qinflag; //移位標志
- uchar code shuzi[12]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf}; //0~9,-,
- uchar code weizi[9]={0x00,0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01};
- uchar code error[10]={0xff,0xaf,0xc0,0xaf,0xaf,0x86,0xff,0xff,0xff};//error
- uchar playshuzu[9],fuhao;
- uchar zhi,weishu=0;
- void init(); //函數申明
- uchar keyscan();
- uchar scanzhi();
- void display();
- void duzhichuli();
- void zhuandisplayjiguo();
- void jiafa();
- void jianfa();
- void chengfa();
- void chufa();
- void qin();
- void displayerror();
- //======================================
- void main() //主函數
- {
- init();
- display();
- while(1)
- {
- duzhichuli();
- }
- }
- //===============================================================================
- void init()
- {
- uchar i;
- czs12=1;
- yiweiflag=1; //１不移
- qinflag=0; //不清除
- duan=shuzi[8];
- wei=weizi[5];
- playshuzu[1]=shuzi[0];
- for(i=2;i<9;i++)
- playshuzu[i]=shuzi[10];
-
- bczs=0;czs=0;jiguo=0,jiguo1=0;
- }
- //===============================================================================
- void delay(uint x)
- {
- uchar y;
- for(x;x>0;x--)
- for(y=112;y>0;y--);
- }
- //====================================
- uchar keyscan()
- {
- unsigned char recode,i,j;
- for(i=0;i<4;i++)
- {
- P3=~(0x01<<i);
- recode=P3>>4;
- if(recode<0x0f)
- {
- for(j=0;j<4;j++)
- {if(!(recode&0x01<<j))break;}
- return (i<<2)+(j+1); //返回鍵值 1-16
- }
- delay(5); //延時5ms
- }
- return 0; //無按鍵返回
- }
- //========================================
- uchar scanzhi()
- {
- uchar zhi,k;
- k=keyscan();
- switch(k)
- {
- case 0: zhi=27;break;
- case 1: zhi=7;break;
- case 2: zhi=8;break;
- case 3: zhi=9;break;
- case 4: zhi=24;break; // /
- case 5: zhi=4;break;
- case 6: zhi=5;break;
- case 7: zhi=6;break;
- case 8: zhi=23;break; //*
- case 9: zhi=1;break;
- case 10: zhi=2;break;
- case 11: zhi=3;break;
- case 12: zhi=22;break; //-
- case 13: zhi=26;break; //nc
- case 14: zhi=0;break;
- case 15: zhi=25;break; //=
- case 16: zhi=21;break; //+
- }
- return(zhi);
- }
- //===========================================
- void duzhichuli()
- {
- uchar tt,u;
- tt=scanzhi();
- if(tt!=27)
- {
- led=0;
- buzzer=0;
- if(tt<=9)//數字輸入
- {
- if(qinflag==1) qin();
- qinflag=0;
- if(yiweiflag!=1)
- {
- for(u=8;u>1;u--) //移位輸入
- {
- playshuzu[u]=playshuzu[u-1];
- }
- }
- yiweiflag=0; //移位
- playshuzu[1]=shuzi[tt];
- if(czs12==1) bczs=bczs*10+tt; //
- if(czs12==2) czs=czs*10+tt;
- }
- if(tt>20)//符號輸入
- {
- switch(tt)
- {
- case 21: jiafa();break; //+
- case 22: jianfa();break; //-
- case 23: chengfa();break; //*
- case 24: chufa();break;
- case 25: zhuandisplayjiguo();break; //=
- case 26: init();break; //nc
- }
- }
- }
- //-----------------------------------------------
- while(tt!=27) //松手檢測
- {
- led=0;
- buzzer=0;
- tt=scanzhi();
- delay(1);
- if(tt==27) goto chu;
- }
- chu: delay(1);
- led=1;
- buzzer=1;
- }
- //============================================
- void display()
- {
- TMOD=0x01;
- TH0=(65536-200)/256;
- TL0=(65536-200)%256;
- EA=1;
- ET0=1;
- TR0=1;
- }
- void TIME0(void) interrupt 1
- {
- TH0=(65536-200)/256;
- TL0=(65536-200)%256;
- i++;
- if(i==9) i=1;
- wei=weizi[i];
- duan=playshuzu[i];
- }
- //=============================================== //顯示數轉操作數
- void zhuandisplayjiguo()
- {
- uchar i,k;
- long ttt;
- for(i=1;i<9;i++)
- playshuzu[i]=shuzi[10];
- //----------------------------------------
- switch(fuhao)
- {
- case 1: jiguo=bczs+czs;break;
- case 2: jiguo=bczs-czs;break;
- case 3: jiguo=bczs*czs;break;
- case 4: jiguo=bczs/czs;break;
- case 0: jiguo=jiguo1;break;
- }
- fuhao=0;
- //----------------------------------------
- ttt=jiguo;
- jiguo1=jiguo; //顯示處理
- k=1; //取數的個數
- for(i=1;i<=8;i++)
- {
- if(ttt/10!=0) k++;
- ttt=ttt/10;
- }
- for(i=8;i>k;i--)
- {
- playshuzu[i]=shuzi[10];
- }
- if(jiguo<0) { jiguo=fabs(jiguo);playshuzu[k+1]=shuzi[11]; } //取正加負號
-
- for(i=1;i<=k;i++)
- {
- playshuzu[i]=shuzi[jiguo%10];
- jiguo=jiguo/10;
- }
- if(jiguo1>99999999) displayerror();
-
- }
- //===================================================
- void qin()
- {
- uchar i;
- yiweiflag=1; //１不移
- playshuzu[1]=shuzi[0];
- for(i=2;i<9;i++)
- playshuzu[i]=shuzi[10];
- }
- //===================================================
- void displayerror()
- {
- uchar i;
- for(i=1;i<=8;i++)
- playshuzu[i]=error[i];
- }
- //===================================================
- void jiafa() //+
- {
- qinflag=1;
- if(jiguo1!=0) bczs=jiguo1;
- czs=0;
- czs12=2;
- ……………………
- …………限于本文篇幅 余下代碼請從51黑下載附件…………
所有資料51hei提供下載:
51單片機簡易計算器.rar
(50.16 KB, 下載次數: 208)
2018-5-18 01:27 上傳
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