简易计算器（数码管显示）

ID:456405 · 发表于 2018-12-27 14:15

*******************************************************************
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<reg51.h>

#define uchar unsigned char

uchar 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,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=P2^6;
sbit wela=P2^7;
sbit beep=P2^3;

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;j>0;j--)
for(k=125;k>0;k--);
}
void display(uchar a,uchar b,uchar c,uchar d,uchar e,uchar f)
{
dula=0;
P0=table[a];
dula=1;
dula=0;

wela=0;
P0=0xfe;
wela=1;
wela=0;
delay(5);

P0=table;
dula=1;
dula=0;

P0=0xfd;
wela=1;
wela=0;
delay(5);

P0=table[c];
dula=1;
dula=0;

P0=0xfb;
wela=1;
wela=0;
delay(5);

P0=table[d];
dula=1;
dula=0;

P0=0xf7;
wela=1;
wela=0;
delay(5);

P0=table[e];
dula=1;
dula=0;

P0=0xef;
wela=1;
wela=0;
delay(5);

P0=table[f];
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:
            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;

      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 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:
            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;
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
{    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*100000+s4*10000+s3*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;
   //display(16,16,16,16,16,16);
   switch(wei)
{
case 6:
hou=s5*100000+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(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(hou<10)
   {
     a0=hou;b0=16;c0=16;d0=16;e0=16;f0=16;
   }
   else
   {
     if(hou<100)
{a0=hou/10;b0=hou%10;c0=16;d0=16;e0=16;f0=16;}
else
{
if(hou<1000)
{a0=hou/100;b0=hou%100/10;c0=hou%10;d0=16;e0=16;f0=16;}
else
{
if(hou<10000)
{a0=hou/1000;b0=hou%1000/100;c0=hou%100/10;d0=hou%10;e0=16;f0=16;}
else
{
if(hou<100000)
{a0=hou/10000;b0=hou%10000/1000;c0=hou%1000/100;d0=hou%100/10;e0=hou%10;f0=16;}
else
{
if(hou<1000000)
{a0=hou/100000;b0=hou%100000/10000;c0=hou%10000/1000;d0=hou%1000/100;e0=hou%100/10;f0=hou%10;}
}
}
}
}
   }
   display(a0,b0,c0,d0,e0,f0);
   P1=hou;

}
if(qingling)
{
a0=16;b0=16;c0=16;d0=16;e0=16;f0=16;
s0=0;s1=0;s2=0;s3=0;s4=0;s5=0;
jia=0;jian=0;cheng=0;chu=0;
jia0=0;jian0=0;cheng0=0;chu0=0;
qingling=0;dengyu=0;
qian=0;hou=0;
display(a0,b0,c0,d0,e0,f0);
}

}

}
}

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