基于51单片机的计算器(附Proteus仿真图且程序有详细注释)

1、#include#define uint unsigned int#define uchar unsigned char#define lint unsigned long int uchar SMG10=0x3f,0x06,0x5b,0x4f, /数码管取模 0x66,0x6d,0x7d,0x07, 0x7f,0x6f ;uchar DATA18=0,0,0,0,0,0,0,0; /第一个数uchar DATA28=0,0,0,0,0,0,0,0; /第二个数uchar RESUIT8=0,0,0,0,0,0,0,0; /结果 uchar px1=0,px2=0,px3=0,flag=0,f

2、lag1=0,flag2=0,flag3=0,f1=0,f2=0,f3=0,f4=0; /各全局变量uchar temp,key;lint x1=0,x2=0,y=0; /输入的数及其结果void Init(); /系统初始化void keyscan(); /键盘检测void delay(uint); /延时void DataOper(); /数据运算void DataHandle(); /数据接收void DisplayHandle(); /显示处理void display(uchar,uchar); /数码管显示函数void main()P2=0x00;while(1) keyscan()

3、; DataHandle(); DisplayHandle(); void Init() /初始化，所有数据归零 uchar i; px1=0;px2=0;px3=0; flag=0;flag1=0;flag2=0;flag3=0; f1=0;f2=0;f3=0;f4=0; x1=0;x2=0;y=0; for(i=0;i8;i+) DATA1i=0;DATA2i=0;RESUITi=0;void delay(msx) /msx为延时毫秒数uint i,j;for(i=0;i=msx;i+)for(j=0;j=110;j+);void display(uchar n,uchar m) /n是第

4、几只数码管，m是显示的数字是多少switch(n)case 0 :P2=0xfe;break;case 1 :P2=0xfd;break;case 2 :P2=0xfb;break;case 3 :P2=0xf7;break;case 4 :P2=0xef;break;case 5 :P2=0xdf;break;case 6 :P2=0xbf;break;case 7 :P2=0x7f;break;P3=SMGm;void keyscan() /矩阵键盘扫描子函数 P1=0xfe; temp=P1; temp=temp&0xf0; if(temp!=0xf0) delay(10);temp=P

5、1;switch(temp)case 0xee: key=0;flag=1;break;case 0xde: key=1;flag=1;break;case 0xbe: key=2;flag=1;break;case 0x7e: key=3;flag=1;break;while(temp!=0xf0)temp=P1;temp=temp&0xf0; P1=0xfd; temp=P1; temp=temp&0xf0; if(temp!=0xf0) delay(10);temp=P1;switch(temp)case 0xed: key=4;flag=1;break;case 0xdd: key=5

6、;flag=1;break;case 0xbd: key=6;flag=1;break;case 0x7d: key=7;flag=1;break;while(temp!=0xf0)temp=P1;temp=temp&0xf0; P1=0xfb; temp=P1; temp=temp&0xf0; if(temp!=0xf0) delay(10);temp=P1;switch(temp)case 0xeb: key=8; flag=1;break;case 0xdb: key=9; flag=1;break;case 0xbb: key=10;flag1=1;display(7,0);break

7、;case 0x7b: key=11;flag1=1;display(7,0);break;while(temp!=0xf0)temp=P1;temp=temp&0xf0; P1=0xf7; temp=P1; temp=temp&0xf0; if(temp!=0xf0) delay(10);temp=P1;switch(temp)case 0xe7: key=12;flag2=1;Init();break;case 0xd7: key=13;flag2=1;DataOper();break;case 0xb7: key=14;flag1=1;display(7,0);break;case 0x

8、77: key=15;flag1=1;display(7,0);break;while(temp!=0xf0)temp=P1;temp=temp&0xf0; void DataOper() uchar i,j,m=0;lint k=0; for(i=0;i(px1-1);i+) /把第一个数组中的数处理成十进制数 k=DATA1i; for(j=0;j(px1-i-1);j+) k=k*10; x1=x1+k; x1=x1+DATA1px1-1; for(i=0;i(px2-1);i+) /把第二个数组中的数处理成十进制数 k=DATA2i; for(j=0;j(px2-i-1);j+) k=

9、k*10; x2=x2+k;x2=x2+DATA2px2-1; if(f1=1) y=x1+x2; /根据标志位进行运算 else if(f2=1) y=x1-x2;else if(f3=1) y=x1*x2;else if(f4=1) y=x1/x2;RESUIT0=y/; /把各位分离出来存入结果数组中RESUIT1=(y%)/;RESUIT2=(y%)/;RESUIT3=(y%)/10000;RESUIT4=(y%10000)/1000;RESUIT5=(y%1000)/100;RESUIT6=(y%100)/10;RESUIT7=y%10;while(!RESUITm) m+;px3=

10、m; void DataHandle() /把每次按键的结果记录下来，并存到适当的位置 if(key10)&(flag=1)&(flag1=0) DATA1px1=key; px1+; flag=0; else if(key10)&(flag=1)&(flag1=1) DATA2px2=key; px2+; flag=0; else if(flag1=1) switch(key)case 10 : f1=1;f2=0;f3=0;f4=0;break; / +case 11 : f1=0;f2=1;f3=0;f4=0;break; / -case 14 : f1=0;f2=0;f3=1;f4=0;break; / *case 15 : f1=0;f2=0;f3=0;f4=1;break; / / void DisplayHandle() /将数据显示在数码管上 uchar i,x; if(flag1=0)&(flag2=0) x=px1; if(px1=0) display(7,0); els