基于单片机键盘的的编程

1、/**按键说明S6-S11 数字0-9的输入S12清零S13等于S14-S17加减乘除程序功能：本程序为简易计算器。可以算整数且正数类型的运算。但是暂时没有实现其连算功能，故在每次运算之后，请按下清零键。*/#include#define uchar unsigned charuchar a0=16,b0=16,c0=16,d0=16,e0=16,f0=16,wei,temp,key,i,j,k;uchar jia,jian,cheng,chu,dengyu,jia0,jian0,cheng0,chu0,qingling;uchar s0,s1

2、,s2,s3,s4,s5; /参加运算的各个位unsigned long qian,hou;/定义参于运算的第一个数和第二个数。sbit dula=P26;sbit wela=P27;sbit beep=P23;unsigned char code table=0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d, 0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71,0x00;void delay(uchar i)for(j=i;j0;j-)for(k=125;k0;k-);void display(uchar a,uchar b,ucha

3、r c,uchar d,uchar e,uchar f) dula=0; P0=tablea; dula=1; dula=0; wela=0; P0=0xfe; wela=1; wela=0; delay(5); P0=tableb; dula=1; dula=0; P0=0xfd; wela=1; wela=0; delay(5); P0=tablec; dula=1; dula=0; P0=0xfb; wela=1; wela=0; delay(5); P0=tabled; dula=1; dula=0; P0=0xf7; wela=1; wela=0; delay(5); P0=tabl

4、ee; dula=1; dula=0; P0=0xef; wela=1; wela=0; delay(5); P0=tablef; dula=1; dula=0; P0=0xdf; wela=1; wela=0; delay(5);void keyscan() P3=0xfe; temp=P3; temp=temp&0xf0; if(temp!=0xf0) delay(10); if(temp!=0xf0) temp=P3; switch(temp) case 0xee: key=0; wei+; break; case 0xde: key=1; wei+; break; case 0xbe:

5、 key=2; wei+; break; case 0x7e: key=3; wei+; break; while(temp!=0xf0) temp=P3; temp=temp&0xf0; beep=0; beep=1; P3=0xfd; temp=P3; temp=temp&0xf0; if(temp!=0xf0) delay(10); if(temp!=0xf0) temp=P3; switch(temp) case 0xed: key=4; wei+; break; case 0xdd: key=5; wei+; break; case 0xbd: key=6; wei+; break;

6、 case 0x7d: key=7; wei+; break; while(temp!=0xf0) temp=P3; temp=temp&0xf0; beep=0; beep=1; P3=0xfb; temp=P3; temp=temp&0xf0; if(temp!=0xf0) delay(10); if(temp!=0xf0) temp=P3; switch(temp) case 0xeb: key=8; wei+; break; case 0xdb: key=9; wei+; break; case 0xbb: qingling=1; /key=10; /wei+; break; case

7、 0x7b: dengyu=1; /key=11; /wei+; break; while(temp!=0xf0) temp=P3; temp=temp&0xf0; beep=0; beep=1; P3=0xf7; temp=P3; temp=temp&0xf0; if(temp!=0xf0) delay(10); if(temp!=0xf0) temp=P3; switch(temp) case 0xe7: jia=1; /key=12; / wei+; break; case 0xd7: jian=1; break; case 0xb7: cheng=1; break; case 0x77

8、: chu=1; break; while(temp!=0xf0) temp=P3; temp=temp&0xf0; beep=0; beep=1; void display0()if(key!=20)switch(wei)case 1: a0=key;b0=16;c0=16;d0=16;e0=16;f0=16;break;case 2: b0=key;c0=16;d0=16;e0=16;f0=16;break;case 3: c0=key;d0=16;e0=16;f0=16;break;case 4: d0=key;e0=16;f0=16;break;case 5: e0=key;f0=16

9、; break;case 6: f0=key;/wei=0;break;key=20;display(a0,b0,c0,d0,e0,f0);if(a0!=16) s5=a0;if(b0!=16) s4=b0;if(c0!=16) s3=c0;if(d0!=16) s2=d0;if(e0!=16) s1=e0;if(f0!=16) s0=f0;void main()uchar gongneng,yunsuan; while(1) keyscan();gongneng=jia|jian|cheng|chu|dengyu|qingling;if(gongneng=0)display0();else

10、yunsuan=jia|jian|cheng|chu;if(yunsuan)a0=16;b0=16;c0=16;d0=16;e0=16;f0=16;/wei=0;if(jia)jia=0;jia0=1;jian0=0;cheng0=0;chu0=0;if(jian)jian=0;jia0=0;jian0=1;cheng0=0;chu0=0;if(cheng)cheng=0;jia0=0;jian0=0;cheng0=1;chu0=0;if(chu)chu=0;jia0=0;jian0=0;cheng0=0;chu0=1;switch(wei)case 6:qian=s5*+s4*10000+s

11、3*1000+s2*100+s1*10+s0;break;case 5:qian=s5*10000+s4*1000+s3*100+s2*10+s1;break;case 4:qian=s5*1000+s4*100+s3*10+s2;break;case 3:qian=s5*100+s4*10+s3;break;case 2:qian=s5*10+s4;break;case 1:qian=s5;break;wei=0;s0=0;s1=0;s2=0;s3=0;s4=0;s5=0;display(a0,b0,c0,d0,e0,f0);/P1=0x55;if(dengyu) dengyu=0; /di

12、splay(16,16,16,16,16,16); switch(wei)case 6:hou=s5*+s4*10000+s3*1000+s2*100+s1*10+s0;break;case 5:hou=s5*10000+s4*1000+s3*100+s2*10+s1;break;case 4:hou=s5*1000+s4*100+s3*10+s2;break;case 3:hou=s5*100+s4*10+s3;break;case 2:hou=s5*10+s4;break;case 1:hou=s5;break;wei=0;s0=0;s1=0;s2=0;s3=0;s4=0;s5=0; if

13、(jia0) jia0=0;hou=qian+hou; if(jian0) jian0=0;hou=qian-hou; if(cheng0) cheng0=0;hou=qian*hou; if(chu0) chu0=0;hou=qian/hou; if(hou10) a0=hou;b0=16;c0=16;d0=16;e0=16;f0=16; else if(hou100)a0=hou/10;b0=hou%10;c0=16;d0=16;e0=16;f0=16;elseif(hou1000)a0=hou/100;b0=hou%100/10;c0=hou%10;d0=16;e0=16;f0=16;elseif(hou10000)a0=hou/1000;b0=hou%1000/100;c0=hou%100/10;d0=hou%10;e0=16;f0=16;elseif(hou)a0=hou/10000;b0=hou%10000/1000;c0=hou%1000/100;d0=hou%100/10;e0=hou%10;f0=16;elseif(hou)a0=hou/;b0=hou%/10000;c0=hou%10000/1000;d0=hou%1000/100;e0=hou%100/10;f0=hou%10; display(a0,b