简易计算器（1602加矩阵键盘）

简易计算器（1602加矩阵键盘）.zip

简易计算器（1602加矩阵键盘）.zip (50.77 KB, 下载次数: 1451 )

实现了如下功能：
1、能计算加减乘除

2、减法结果可以为负数

3、最大可计算4294967295

辉龙天子 · 2016-4-8 23:24:25

非常感谢分享，谢谢

asd8520 · 2016-4-22 08:52:36

学习一下

*123*^#

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吕昊天 · 2016-4-25 11:25:52

学习了！！！！！！！！！！！

hanhan1129 · 2016-4-26 22:42:59

谢谢楼主分享研究一下

夏豪振 · 2016-6-2 16:53:13

三大岁的王绍地区稳定和我的委屈哦等我期待和期望很大期望

工科单片机 · 2016-6-3 09:23:47

对于新手来说还是可以的

Lxorc · 2016-6-3 09:35:57

efqefqefsa#include
#include
#define uchar unsigned char
#define uint unsigned int
***it R=P2^0;
***it W=P2^1;
***it E=P2^2;
void show(unsigned long  x );
void delay(unsigned int k);//延时
int keyc();//键盘扫描
void init();//LCD初始化
void write_com_1602(unsigned char command);//写命令
void write_data_1602(unsigned char datum);//写数据
void desplay(unsigned int a);//显示程序
unsigned int key;
unsigned char anjian(void) ;
void DelayMS(uint x)
{
uchar i;
while(x--)
  for(i=0;i<250;i++);
}
uchar x;
void main()
{
  unsigned  long first,second,c;
  unsigned  long third ;
/// unsigned char flag ;//flag1;
  //first=0;flag=1;
_nop_();
  init();
P1=0x0f;
  while(1)
{
               while(P1==0x0f);
key=anjian();
   if(key<11&&key>=0)
               {

                 first=first*10+key;//key=0;
     desplay(key);//显示第一位
               // P1=0x0f;
               while(P1!=0x0f);
   delay(130);
   }
                 if(key<17&&key>=13)
            {
            switch (key)
            {
               case 16:  write_data_1602('+'); second=first;  first=0; c=1;
break;
case 15:  write_data_1602('-'); second=first;  first=0; c=2;
break;
case 14:  write_data_1602('*'); second=first;  first=0; c=3;
break;
case 13:  write_data_1602('/'); second=first;  first=0; c=4;
break;
default: break;
               delay(130);
            }
            delay(130);
            }
   if(key==12)
      {
         write_com_1602(0x80+0x40);//给AC送值
         write_data_1602('=');
         // third= first ;
            switch (c)
            {
               case 1: third=second+first;
break;
case 2: third=second-first;
break;
case 3: third =second*first;
break;
case 4: third=second/first;
break;
// default:
// break;
            }
            show( third);

   }
            if(key==11)
            {
            write_com_1602(0X01);//清屏
            write_com_1602(0X80);//给AC送值
            first=second=0;
            }


         }
}
void init()//LCD初始化
{
            E=0;W=0;
write_com_1602(0X38);//数据位为8位，显示2行字符.5*7点阵字符体
write_com_1602(0X0F);//开显示，光标消失，不闪烁
write_com_1602(0X06);//光标右移，AC递增
write_com_1602(0X01);//清屏
write_com_1602(0X80);//给AC送值
}

void write_com_1602(unsigned char command)
{
E = 0;
R = 0;
W = 0;
P0 = command;
delay(2);
E = 1;
delay(4);
E = 0;
}
void write_data_1602(unsigned char datum)//写数据
{
E = 0;
W = 0;
R = 1;
P0 = datum;
delay(2);
E = 1;
delay(4);
E = 0;
}
unsigned char anjian(void)
  {
uchar x;
while(P1==0x0f);
P1=0XFE;
if (P1!=0XFE)
{
DelayMS(20);
  if (P1!=0XFE)
{
switch (P1)
  {
    case 0XEE : while(P1==0XEE);  x=1;//P1=0XFf;
break;
case 0XDE :while(P1==0XDE); x=4;// P1=0XFf;
break;
case 0XBE :while(P1==0XBE); x=7; //P1=0XFf;
break;
case 0X7E :while(P1==0X7E); x=11;// P1=0XFf;
break;
// default:    return -1;// P1=0XFf;
// break;
  }
  }
  }
  P1=0XFD;
  if (P1!=0XFD)
{ DelayMS(20);
  if (P1!=0XFD)
   {
switch (P1)
      {
    case 0XED :  while(P1==0XED); x=2;// P1=0XFf;
break;
case 0XDD : while(P1==0XDD);x=5; // P1=0XFf;
break;
case 0XBD : while(P1==0XBD);x=8; //P1=0XFf;
break;
case 0X7D :  while(P1==0X7D);x=0; // P1=0XFf;
break;
         }
   }
  }
P1=0XFB;
if (P1!=0XFB)
{ DelayMS(20);
  if (P1!=0XFB)
   {
switch (P1)
      {
    case 0XEB :  while(P1==0XEB); x=3;// P1=0XFf;
break;
case 0XDB :  while(P1==0XDB);x=6;// P1=0XFf;
break;
case 0XBB : while(P1==0XBB);x=9; //P1=0XFf;
break;
case 0X7B : while(P1==0X7B);x=12;// P1=0XFf;
break;
         }
   }
  }
  P1=0XF7;
if (P1!=0XF7)
{ DelayMS(20);
  if (P1!=0XF7)
   {
switch (P1)
      {
    case 0XE7 : while(P1==0XE7);  x=16; // P1=0XFf;
break;
case 0XD7 :    while(P1==0XD7); x=15;// P1=0XFf;
break;
case 0XB7 :    while(P1==0XB7); x=14; // P1=0XFf;
break;
case 0X77 :    while(P1==0X77);  x=13; //P1=0XFf;
break;
// default: return -1; //P1=0XFf;
    // break;
         }
   }
  }
            P1=0x0f;
while(P1!=0x0f);
            return x;
}

void desplay( unsigned  int a) //  为啥把long 去掉，仿真的效果就大不相同呢，很郁闷，向大神们求解
{

  unsigned char b;
  b=a+0x30;
  write_data_1602(b);

  }
void delay(unsigned int k)
{
int l;
while(--k!=0)
{
for(l=0;l<125;l++);
}
}
void show( unsigned long  x )
  {
unsigned int num,c,j;
unsigned long a=1,k;
unsigned char table[]={"0123456789"};
unsigned char y;
            write_com_1602(0x80+0x41);
//    write_data_1602('=');
k=x;
while(k!=0)
{
num++;
k=k/10;
}
for(j=1;j {
a=a*10;
}
while(num)
{
c=x/a;
x=x%a;
a=a/10;
y=table[c];
num--;
write_data_1602(y);
delay(50);
}
  }