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標(biāo)題: 單片機(jī)矩形按鍵-特定按鍵顯示特定的數(shù)-且可以加減數(shù)字 [打印本頁]

作者: ！=5 時間: 2020-2-21 11:59
標(biāo)題: 單片機(jī)矩形按鍵-特定按鍵顯示特定的數(shù)-且可以加減數(shù)字

#include<reg51.h>//矩陣鍵盤從下往上從左往右依次為1 2 3……號 14號為復(fù)位加減  15號++ 16號--
#include<intrins.h>
#define uint unsigned int
#define uchar unsigned char
#define DIG P0
#define KEY P1
sbit seg1=P2^0;
//sbit seg2=P2^2;
uchar code shuzi[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7C,0x39,0x5E};
uchar xianshi,a=0,b,c;
void delay(uint t)
{
      while(t--);
}
void keydown()
{
      KEY=0xf0;
      if(KEY!=0xf0)
      {
            delay(15);
            if(KEY!=0xf0)
            {
                     switch(KEY)
            {
                     case(0x70):xianshi=0;break;
                     case(0xb0):xianshi=1;break;
                     case(0xd0):xianshi=2;c--;break;
                     case(0xe0):xianshi=3;c++;break;
            }
            KEY=0x0f;
                     switch(KEY)
            {
                     case(0x07):xianshi=xianshi;break;
                     case(0x0b):xianshi=xianshi+4;break;
                     case(0x0d):xianshi=xianshi+8;break;
                     case(0x0e):xianshi=xianshi+12;break;
            }
            while((a<50)&&(KEY!=0XF0))
            {
                     delay(1000);
                     a++;
            }
            }
      }
}
void main()
{
      seg1=0;
while(1)
{
  keydown();
      if ((xianshi>=0)&&(xianshi<=12))
            DIG=shuzi[xianshi];
      if(xianshi==13)
      {
            c=5;
      DIG=shuzi[c];
      }
      if(xianshi==14)
      {
            DIG=shuzi[c];
            delay(50000);
      }
               if(xianshi==15)
      {
            DIG=shuzi[c];
            delay(50000);
      }
      }
}

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