51单片机双显示小数计算器

1、自己制作的单片机程序，既可以用数码管显示，也可以用1602显示,且可以显示小数#include<reg52.h>#include <math.h>#define uint unsigned int#define uchar unsigned charuchar code tabledu16=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;uchar code tabledu116=0xbf,0x86,0xdb,0xcf,0xe6,0xed,0xfd,0x87,

2、0xff,0xef,0xf7,0xfc,0xb9,0xde,0xf9,0xf1;uchar code tablewe8=0,1,2,3,4,5,6,7;uchar code table="0123456789"uchar dispbuf4=0,0,0,0; float dispbuf14=0,0,0,0;uchar aa,temp,key,keypos,flag,fuhao,a0,b0,c0,d0,e0,flag1,flag2,a1,b1,c1,d1;float num1,num2,num3,flag3=1; int num5,num6,num7,n2;long n1;sb

3、it RS=P25;sbit RW=P26;sbit E=P27;sbit key1=P32;sbit key2=P33;sbit key3=P34;void keyscan1();void ukeyscan1(); void delay(uint z) uint x,y; for(x=z;x>0;x-) for(y=110;y>0;y-);void change(uchar *p,uchar count)count=4-count;while(count<3) *(p+count)=*(p+count+1); count+; float jisuan(float x,cha

4、r y,float z)float m;if(y=10)m=x+z;if(y=11)m=x-z;if(y=12)m=x*z;if(y=13)m=x/z;return m;bit Busy(void)bit busy_flag = 0;RS = 0;RW = 1;E = 1;delay(1);busy_flag = (bit)(P0 & 0x80);E = 0;return busy_flag;void wcmd(uchar del)while(Busy();RS=0;RW=0;E=0;P0=del;delay(1);E=1;delay(1);E=0;void wdata(uchar d

5、el)while(Busy();RS=1;RW=0;E=0;P0=del;delay(1);E=1;delay(1);E=0; void keyscan() P1=0xfe; temp=P1; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xee:key=1; break; case 0xde:key=2; break; case 0xbe:key=3; break; case 0x7e:key=

6、4; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if (key>=0)&&(key<10) keypos+; if(flag2=0) if(keypos<=4) change(dispbuf,keypos); dispbuf3=key; else dispbuf1keypos-1=key; P1=0xfd; temp=P1; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(tem

7、p!=0xf0) temp=P1; switch(temp) case 0xed:key=5; break; case 0xdd:key=6; break; case 0xbd:key=7; break; case 0x7d:key=8; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if (key>=0)&&(key<10) keypos+; if(flag2=0) if(keypos<=4) change(dispbuf,keypos); dispbuf3=key; else dispbuf1k

8、eypos-1=key; P1=0xfb; temp=P1; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xeb:key=9; break; case 0xdb:key=0; break; case 0xbb:key=10; break; case 0x7b:key=11; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if (key

9、>=0)&&(key<10) keypos+; if(flag2=0) if(keypos<=4) change(dispbuf,keypos); dispbuf3=key; else dispbuf1keypos-1=key; if (key>9)&&(key<14) fuhao=key;num1=1000*dispbuf0+100*dispbuf1+10*dispbuf2+dispbuf3+dispbuf10/10+dispbuf11/100+dispbuf12/1000+dispbuf13/10000;dispbuf0=0;d

10、ispbuf1=0;dispbuf2=0;dispbuf3=0;dispbuf10=0;dispbuf11=0;dispbuf12=0;dispbuf13=0;keypos=0;flag2=0;while(1) keyscan1();if(key=15)break; if(key=15)dispbuf0=0;dispbuf1=0;dispbuf2=0;dispbuf3=0;dispbuf10=0;dispbuf11=0;dispbuf12=0;dispbuf13=0;keypos=0;flag2=0; P1=0xf7; temp=P1; temp=temp&0xf0; while(te

11、mp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xe7:key=12; break; case 0xd7:key=13; break; case 0xb7:key=14; break; case 0x77:key=15; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if (key>=0)&&(key<10) keypos+; if(flag2=0) if(keyp

12、os<=4) change(dispbuf,keypos); dispbuf3=key; else dispbuf1keypos-1=key; if (key>9)&&(key<14) fuhao=key;num1=1000*dispbuf0+100*dispbuf1+10*dispbuf2+dispbuf3+dispbuf10/10+dispbuf11/100+dispbuf12/1000+dispbuf13/10000;dispbuf0=0;dispbuf1=0;dispbuf2=0;dispbuf3=0;dispbuf10=0;dispbuf11=0;d

13、ispbuf12=0;dispbuf13=0;keypos=0;flag2=0;while(1) keyscan1();if(key=15)break; if(key=15)dispbuf0=0;dispbuf1=0;dispbuf2=0;dispbuf3=0;dispbuf10=0;dispbuf11=0;dispbuf12=0;dispbuf13=0;keypos=0;flag2=0; if(keypos=4)keypos=0;if(key1=0)delay(5);if(key1=0)while(key1=0);flag2=1;keypos=0; if(key2=0)delay(5);if

14、(key2=0)while(key2=0);num1=1000*dispbuf0+100*dispbuf1+10*dispbuf2+dispbuf3+dispbuf10/10+dispbuf11/100+dispbuf12/1000+dispbuf13/10000;num3=sqrt(num1);num6=num3;num5=(num3-num6)*10000;dispbuf0=num6/1000;dispbuf1=num6%1000/100;dispbuf2=num6%1000%100/10;dispbuf3=num6%1000%100%10;dispbuf10=num5/1000;disp

15、buf11=num5%1000/100;dispbuf12=num5%1000%100/10;dispbuf13=num5%1000%100%10; void keyscan1() P1=0xfe; temp=P1; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xee:key=1; break; case 0xde:key=2; break; case 0xbe:key=3; break; ca

16、se 0x7e:key=4; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if (key>=0)&&(key<10) keypos+; if(flag2=0) if(keypos<=4) change(dispbuf,keypos); dispbuf3=key; else dispbuf1keypos-1=key; P1=0xfd; temp=P1; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf

17、0; while(temp!=0xf0) temp=P1; switch(temp) case 0xed:key=5; break; case 0xdd:key=6; break; case 0xbd:key=7; break; case 0x7d:key=8; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if (key>=0)&&(key<10) keypos+; if(flag2=0) if(keypos<=4) change(dispbuf,keypos); dispbuf3=key; el

18、se dispbuf1keypos-1=key; P1=0xfb; temp=P1; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xeb:key=9; break; case 0xdb:key=0; break; case 0xbb:key=10; break; case 0x7b:key=11; break; while(temp!=0xf0) temp=P1; temp=temp&0

19、xf0; if (key>=0)&&(key<10) keypos+; if(flag2=0) if(keypos<=4) change(dispbuf,keypos); dispbuf3=key; else dispbuf1keypos-1=key; if (key>9)&&(key<14) num1=num3;fuhao=key;dispbuf0=0;dispbuf1=0;dispbuf2=0;dispbuf3=0;dispbuf10=0;dispbuf11=0;dispbuf12=0;dispbuf13=0;keypos=0;

20、 P1=0xf7; temp=P1; temp=temp&0xf0; while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xe7:key=12; break; case 0xd7:key=13; break; case 0xb7:key=14; break; case 0x77:key=15; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if (key>=0)&am

21、p;&(key<10) keypos+; if(flag2=0) if(keypos<=4) change(dispbuf,keypos); dispbuf3=key; else dispbuf1keypos-1=key; if (key>9)&&(key<14) num1=num3;fuhao=key;dispbuf0=0;dispbuf1=0;dispbuf2=0;dispbuf3=0;dispbuf10=0;dispbuf11=0;dispbuf12=0;dispbuf13=0;keypos=0; if (key=14) num2=1000

22、*dispbuf0+100*dispbuf1+10*dispbuf2+dispbuf3+dispbuf10/10+dispbuf11/100+dispbuf12/1000+dispbuf13/10000;num3=jisuan(num1,fuhao,num2);num6=num3;num5=(num3-num6)*10000;dispbuf0=num6/1000;dispbuf1=num6%1000/100;dispbuf2=num6%1000%100/10;dispbuf3=num6%1000%100%10;dispbuf10=num5/1000;dispbuf11=num5%1000/10

23、0;dispbuf12=num5%1000%100/10;dispbuf13=num5%1000%100%10;flag2=0; if(keypos=4)keypos=0;if(key1=0)delay(5);if(key1=0)while(key1=0);flag2=1;keypos=0; if(key2=0)delay(5);if(key2=0)while(key2=0);num1=1000*dispbuf0+100*dispbuf1+10*dispbuf2+dispbuf3+dispbuf10/10+dispbuf11/100+dispbuf12/1000+dispbuf13/10000

24、;num3=sqrt(num1);num6=num3;num5=(num3-num6)*10000;dispbuf0=num6/1000;dispbuf1=num6%1000/100;dispbuf2=num6%1000%100/10;dispbuf3=num6%1000%100%10;dispbuf10=num5/1000;dispbuf11=num5%1000/100;dispbuf12=num5%1000%100/10;dispbuf13=num5%1000%100%10; void ukeyscan()P1=0xfe;temp=P1;temp=temp&0xf0;while(t

25、emp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xee:key=1; break; case 0xde:key=2; break; case 0xbe:key=3; break; case 0x7e:key=4; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if(flag1=0)wdata(tablekey);num1=num1*10+key;else flag3=flag3*10;num

26、1=num1+key/flag3;wdata(tablekey); P1=0xfd;temp=P1;temp=temp&0xf0;while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xed:key=5; break; case 0xdd:key=6; break; case 0xbd:key=7; break; case 0x7d:key=8; break; while(temp!=0xf0) temp=P1; temp=temp&a

27、mp;0xf0; if(flag1=0)wdata(tablekey);num1=num1*10+key;else flag3=flag3*10;num1=num1+key/flag3;wdata(tablekey); P1=0xfb;temp=P1;temp=temp&0xf0;while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xeb:key=9; break; case 0xdb:key=0; break; case 0xbb:

28、key=10; break; case 0x7b:key=11; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if(key=0|key=9)if(flag1=0)wdata(tablekey);num1=num1*10+key;else flag3=flag3*10;num1=num1+key/flag3;wdata(tablekey); if (key>9)&&(key<14) fuhao=key;if(key=10)key=0x2B;else if(key=11)key=0x2d;else if(k

29、ey=12)key=0x2a;else if(key=13)key=0x2f;flag1=0;flag3=1;wdata(key);while(1) ukeyscan1();if(key=15)break; if(key=15)wcmd(0x01);wcmd(0x0e);flag1=0;flag3=1;num1=0;num2=0;num3=0;fuhao=0; P1=0xf7;temp=P1;temp=temp&0xf0;while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1;

30、 switch(temp) case 0xe7:key=12; break; case 0xd7:key=13; break; case 0xb7:key=14; break; case 0x77:key=15; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if (key>9)&&(key<14) fuhao=key;if(key=10)key=0x2B;else if(key=11)key=0x2d;else if(key=12)key=0x2a;else if(key=13)key=0x2f;fla

31、g1=0;flag3=1;wdata(key);while(1) ukeyscan1();if(key=15)break; if(key=15)wcmd(0x01);wcmd(0x0e);flag1=0;flag3=1;num1=0;num2=0;num3=0;fuhao=0; if(key1=0)delay(5);if(key1=0)while(key1=0);flag1=1;wdata(0x2e); void ukeyscan1()P1=0xfe;temp=P1;temp=temp&0xf0;while(temp!=0xf0) delay(5); temp=P1; temp=tem

32、p&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xee:key=1; break; case 0xde:key=2; break; case 0xbe:key=3; break; case 0x7e:key=4; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if(flag1=0)wdata(tablekey);num2=num2*10+key;else flag3=flag3*10;num2=num2+key/flag3;wdata(tablekey); P1=0xfd;temp=P1;temp=temp&0xf0;while(temp!=0xf0) delay(5); temp=P1; temp=temp&0xf0; while(temp!=0xf0) temp=P1; switch(temp) case 0xed:key=5; break; case 0xdd:key=6; break; case 0xbd:key=7; break; case 0x7d:key=8; break; while(temp!=0xf0) temp=P1; temp=temp&0xf0; if(flag1=0)wdata(ta