基于郭天祥C51单片机开发板的简易计算器

1、#include<reg52.h>#define uint unsigned int #define uchar unsigned charsbit wela=P27;sbit dula=P26;uchar temp,flag=0,x=0;uint n1=0,n2=0,n=0,m;uchar code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71;uchar code wei=0xff,0xdf,0xef,0xf7,0xfb; void delayms(ui

2、nt); /ÑÓ³Ùº¯ÊýµÄÉêÃ÷void display(uint);void main() while(1) /¼ì²âµÚÒ»ÅÅ°´¼ü P3=0xfe; temp=P3; temp=temp&0xf0; while(temp!=0xf0) /Óа´

3、88;ü°´Ï delayms(5); /ÑÓ³Ù5SÈ¥¶¶¶¯ temp=P3; temp=temp&0xf0; /È¥¶¶¶¯ÔÙ¼ì²âÊÇ·ñÓа´¼ü°´Ï whi

4、le(temp!=0xf0) /È¥¶¶¶¯ºóÈÔÓа´¼ü°´Ï temp=P3;/´ËʱµÄP3ÊÇÓа´¼ü°´ÏÂʱµÄ11101110£¬

5、¶ø11101110£¡=0xf0£¬ /ËùÒÔûÓÐÌø³öwhileÑ­»· £¬µ±ËÉÊÖµÄÄÇһ˲¼ä£¬P0¾Í±ä&

6、#179;ÉÁË11111110£¬ /ÄÇô¾ÍÌø³öÁËÑ­»·£¬ÊÇÖ´ÐÐÁËÏÂÃæµÄswitchÓï¾äºó²ÅÌ

7、48;³öµÄ switch(temp) case 0xee:n1=10*n1+1; break; case 0xde:n1=10*n1+2; break; case 0xbe:n1=10*n1+3; break; case 0x7e:n2=n1;n1=0;flag=1; break; while(temp!=0xf0)/ËÉÊÖ¼ì²â,Åжϰ´¼üÊÇ·

8、41;ËÉÊÖtemp=P3;/µ±ËÉÊÖµÄÄÇһ˲¼ä£¬P0¾Í±ä³ÉÁË11111110£¬ /ÄÇô¾ÍÌø³öÁËÑ­

9、»·temp=temp&0xf0; if(x=0) display(n1); P3=0xfd;/¼ì²âµÚ¶þÅÅ°´¼ütemp=P3;temp=temp&0xf0;while(temp!=0xf0)delayms(5);temp=P3;temp=temp&0xf0;while(temp!=0xf0)temp=P3;switch(temp)case 0xed: n1=10*n1+4; break;case 0

10、xdd: n1=10*n1+5; break;case 0xbd: n1=10*n1+6; break;case 0x7d: n2=n1;n1=0;flag=2;break;while(temp!=0xf0)temp=P3;temp=temp&0xf0;if(x=0)display(n1); /¼ì²âµÚÈýÅÅ°´¼üP3=0xfb;temp=P3;temp=temp&0xf0;while(temp!=0xf0)delayms(5);t

11、emp=P3;temp=temp&0xf0;while(temp!=0xf0)temp=P3;switch(temp)case 0xeb:n1=10*n1+7;break;case 0xdb:n1=10*n1+8;break;case 0xbb:n1=10*n1+9;break;case 0x7b:n2=n1;n1=0;flag=3;break; while(temp!=0xf0)temp=P3;temp=temp&0xf0; if(x=0)display(n1); /¼ì²âµÚËÄÅ&

12、#197;°´¼ü P3=0xf7;temp=P3;temp=temp&0xf0;while(temp!=0xf0)delayms(5);temp=P3;temp=temp&0xf0;while(temp!=0xf0)temp=P3;switch(temp)case 0xe7:n=0;n1=0;n2=0;flag=0;x=0;break;case 0xd7:n1=10*n1+0;n=n1;break;case 0xb7:if(flag=1)n=n2+n1; if(flag=2)n=n2-n1; if(flag=3)n=n2*n1; if(

13、flag=4)n=n2/n1; n1=0;x=1;break;/ =case 0x77:n2=n1;n1=0;flag=4;break; / / while(temp!=0xf0) temp=P3; temp=temp&0xf0; /½«ÉÏÃæ¼ì²âµ½µÄ°´¼ü¶ÔÓ¦µÄÊýÏÔʾ

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15、3;â¾ÍÊÇΪʲôÎÒÃÇÔÚûÓа´Ï°´¼üʱ£¬ÊýÂë¹ÜÒ»Ö±ÏÔʾµÄ

16、2;¼ÊÇ0 /dula=1; / P0=tablenum-1; / dula=0; if(x!=0) display(n); void delayms(uint xms) /ÑÓ³Ùº¯Êý uint i,j; for(i=xms;i>0;i-) for(j=110;j>0;j-);void display(uint n) uchar g,s,b,q; if(n>=0)&&(n<9999) g=n%10; s=n/10%10; b=n/100%10; q=n/1000%10; dula=1; P0=tableg; dula=0; P0=0xff; wela=1; P0=wei1; wela=0; delayms(5); if(n