#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; //參加運算的各個位
unsigned long qian,hou;//定義參于運算的第一個數和第二個數。
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[b];
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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