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本帖最后由 LAY2 于 2018-6-24 18:41 编辑
#include<reg51.h>
#include<intrins.h>
#include<math.h>
#include<stdlib.h>
sbit RS=P2^0;
sbit RW=P2^1;
sbit E=P2^2;
sbit BUZZER=P1^0;
#define unchar unsigned char
#define unint unsigned int
void delay(unsigned int t)
{
unsigned int i,j;
for(i=0;i<t;i++)
for(j=0;j<120;j++);
}
void busy()
{
RS=0;
RW=1;
E=1;
P0=0xff;
while((P0&0x80)==0x80);
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
}
void write_com(unsigned char com)
{
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
busy();
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
RS=0;
RW=0;
E=1;
P0=com;
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
E=0;
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
}
void write_data(unchar date)
{
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
busy();
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
RS=1;
RW=0;
E=1;
P0=date;
E=0;
}
void init()
{
write_com(0x30);
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
write_com(0x0c);
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
write_com(0x01);
_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();_nop_();
write_com(0x06);
}
void sendaddr(unchar n,unchar m)
{
switch(n)
{
case 1:write_com(0x80+m);break;
case 2:write_com(0x90+m);break;
case 3:write_com(0x88+m);break;
case 4:write_com(0x98+m);break;
}
}
void display(unchar n,unchar m,unchar*s)
{
sendaddr(n,m);
while(*s>0)
{
write_data(*s);
s++;
}
}
void clearscreen()
{
write_com(0x01);
}
void tishi()
{
clearscreen();
display(1,0,"超出计算范围");
display(2,0,"请按复位键");
display(3,0,"并重新输入");
display(4,0,"否则会出现错误");
}
void displayshu(unchar n,unchar m,long rzt)
{
unchar i,j,k,x,p;
unchar t[10]={0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff};
unsigned char array[10];
array[9]=(int)rzt%10;
array[8]=((int)rzt/10)%10;
array[7]=((int)rzt/100)%10;
array[6]=((int)rzt/1000)%10;
array[5]=((int)rzt/10000)%10;
array[4]=((int)rzt/100000)%10;
array[3]=((int)rzt/1000000)%10;
array[2]=((int)rzt/10000000)%10;
array[1]=((int)rzt/100000000)%10;
array[0]=(int)rzt/1000000000;
sendaddr(n,m);
for(i=0;i<10;i++)
{
if(array==0)
p=i;
else
break;
}
for(j=p+1;j<10;j++)
{
t[k]=array[j];
k++;
}
while(t[x]!=0xff)
{
write_data(t[x]+0x30);
x++;
}
}
void main(void)
{
unchar i,j,opt,p;
long b,c,rzt;
start:
init();
delay(20);
i=0;j=0;rzt=0;b=0;c=0;
write_com(0x80);
while(1)
{
P3=0xfe;
if(P3!=0xfe)
{
delay(40);
if(P3!=0xfe)
{
switch(P3&0xf0)
{
case 0x70:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(0+0x30);
b=b*10+0;
i++;
if(i==11)tishi();
break;
case 0xb0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(1+0x30);
b=b*10+1;
i++;
if(i==11)tishi();
break;
case 0xd0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(2+0x30);
b=b*10+2;
i++;
if(i==11)tishi();
break;
case 0xe0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(3+0x30);
b=b*10+3;
i++;
if(i==11)tishi();
break;
}
if(P3!=0xfe);
delay(30);
while(P3!=0xfe);
}
}
P3=0xfd;
if(P3!=0xfd)
{
delay(40);
if(P3!=0xfd)
{
switch(P3&0xf0)
{
case 0x70:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(4+0x30);
b=b*10+4;
i++;
if(i==11)tishi();
break;
case 0xb0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(5+0x30);
b=b*10+5;
i++;
if(i==11)tishi();
break;
case 0xd0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(6+0x30);
b=b*10+6;
i++;
if(i==11)tishi();
break;
case 0xe0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(7+0x30);
b=b*10+7;
i++;
if(i==11)tishi();
break;
}
if(P3!=0xfd);
delay(30);
while(P3!=0xfd);
}
}
P3=0xfb;
if(P3!=0xfb)
{
delay(40);
if(P3!=0xfb)
{
switch(P3&0xf0)
{
case 0x70:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(8+0x30);
b=b*10+8;
i++;
if(i==11)tishi();
break;
case 0xb0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(9+0x30);
b=b*10+9;
i++;
if(i==11)tishi();
break;
case 0xd0:
BUZZER=0;
delay(80);
BUZZER=1;
p=1;
write_com(0x97);
write_data(0x2b);
opt=10;
goto two;
break;
case 0xe0:
BUZZER=0;
delay(80);
BUZZER=1;
p=1;
write_com(0x97);
write_data(0x2d);
opt=10;
goto two;
break;
}
if(P3!=0xfb);
delay(30);
while(P3!=0xfb);
}
}
P3=0xf7;
if(P3!=0xf7)
{
delay(40);
if(P3!=0xf7)
{
switch(P3&0xf0)
{
case 0x70:
BUZZER=0;
delay(80);
BUZZER=1;
p=1;
write_com(0x97);
write_data(0x2a);
opt=12;
goto two;
break;
case 0xb0:
BUZZER=0;
delay(80);
BUZZER=1;
p=1;
write_com(0x97);
write_data(0x2f);
opt=13;
goto two;
break;
case 0xd0:
BUZZER=0;
delay(80);
BUZZER=1;
clearscreen();
goto start;
break;
case 0xe0:
BUZZER=0;
delay(80);
BUZZER=1;
clearscreen();
goto start;
break;
}
if(P3!=0xf7);
delay(30);
while(P3!=0xf7);
}
}
}
two:
write_com(0x88);
while(1)
{
P3=0xfe;
if(P3!=0xfe)
{
delay(40);
if(P3!=0xfe)
{
switch(P3&0xf0)
{
case 0x70:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(0+0x30);
c=c*10+0;
j++;
if(j==11)tishi();
break;
case 0xb0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(1+0x30);
c=c*10+1;
j++;
if(j==11)tishi();
break;
case 0xd0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(2+0x30);
c=c*10+2;
j++;
if(j==11)tishi();
break;
case 0xe0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(3+0x30);
c=c*10+3;
j++;
if(j==11)tishi();
break;
}
if(P3!=0xfe);
delay(30);
while(P3!=0xfe);
}
}
P3=0xfd;
if(P3!=0xfd)
{
delay(40);
if(P3!=0xfd)
{
switch(P3&0xf0)
{
case 0x70:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(4+0x30);
c=c*10+4;
j++;
if(j==11)tishi();
break;
case 0xb0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(5+0x30);
c=c*10+5;
j++;
if(j==11)tishi();
break;
case 0xd0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(6+0x30);
c=c*10+6;
j++;
if(j==11)tishi();
break;
case 0xe0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(7+0x30);
c=c*10+7;
j++;
if(j==11)tishi();
break;
}
if(P3!=0xfd);
delay(30);
while(P3!=0xfd);
}
}
P3=0xfb;
if(P3!=0xfb)
{
delay(40);
if(P3!=0xfb)
{
switch(P3&0xf0)
{
case 0x70:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(8+0x30);
c=c*10+8;
j++;
if(j==11)tishi();
break;
case 0xb0:
BUZZER=0;
delay(80);
BUZZER=1;
write_data(9+0x30);
c=c*10+9;
j++;
if(j==11)tishi();
break;
case 0xd0:
BUZZER=0;
delay(80);
BUZZER=1;
if(p==0){write_com(0x97);write_data(0x2b);}
break;
case 0xe0:
BUZZER=0;
delay(80);
BUZZER=1;
if(p==0){write_com(0x97);write_data(0x2d);}
break;
}
if(P3!=0xfb);
delay(30);
while(P3!=0xfb);
}
}
P3=0xf7;
if(P3!=0xf7)
{
delay(40);
if(P3!=0xf7)
{
switch(P3&0xf0)
{
case 0x70:
BUZZER=0;
delay(80);
BUZZER=1;
if(p==0){write_com(0x97);write_data(0x2a);}
break;
case 0xb0:
BUZZER=0;
delay(80);
BUZZER=1;
if(p==0){write_com(0x97);write_data(0x2f);}
break;
case 0xd0:
BUZZER=0;
delay(80);
BUZZER=1;
goto answer;
break;
case 0xe0:
BUZZER=0;
delay(80);
BUZZER=1;
goto answer;
break;
}
}
if(P3!=0xf7);
delay(30);
while(P3!=0xf7);
}
}
answer:
write_com(0x98);
write_data(0x3d);
if(c==0&&opt==13)
{
display(2,0,"分母不能为零");
clearscreen();
goto start;
}
switch(opt)
{
case 10:rzt=(b+c);displayshu(4,2,rzt);break;
case 11:rzt=(b-c);if(rzt<0){rzt=c-b;write_data(0x2d);}displayshu(4,2,rzt);break;
case 12:rzt=(b*c);displayshu(4,2,rzt);break;
case 13:rzt=(b/c);
if((int)b%(int)c==0)
displayshu(4,2,rzt);
else
rzt=rzt*1000;
displayshu(4,2,rzt);
break;
}
if(rzt>9999999999)
{
clearscreen();
display(2,1,"超出计算范围");
delay(1000);
goto start;
}
while(1)
{
P3=0xf7;
if(P3!=0xf7)
{
delay(40);
if(P3!=0xf7)
{
if((P3&0xf0)==0xe0)
{
goto start;
}
if(P3!=0xf7);
delay(30);
while(P3!=0xf7);
}
}
}
}
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