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- #include<reg51.h>
- #include<math.h>
- #define uint unsigned int
- #define uchar unsigned char
- uchar code tab[]={0xee,0xed,0xeb,0xe7,
- 0xde,0xdd,0xdb,0xd7,
- 0xbe,0xbd,0xbb,0xb7,
- 0x7e,0x7d,0x7b,0x77,}; //0~f鍵位碼表
- uchar code tab1[]={0x88,0Xbe,0Xc4,0X94,0Xb2,0X91,0X81,0Xbc,
- 0X80,0X90,0xa0,0x83,0xc9,0x86,0xc1,0xe1,0xff}; //0~f字型碼表
- void delay(uchar x) //毫秒級延時函數(shù)
- {
- uchar y;
- for(;x>0;x--)
- for(y=110;y>0;y--);
- }
- scanf() //按鍵處理函數(shù)
- {
- uchar temp,temp1,i;
- P0=0xf0; //給P0口賦值為oxf0，用于列掃描
- if(P0!=0xf0) //判別是否有鍵按下
- {
- delay(2);
- if(P0!=0xf0) //再次判別是否有鍵按下
- {
- temp1=P0; //P0值賦給temp1
- P0=0x0f; //P0值賦為0x0f，用于行掃描
- temp=temp1|P0; //將行列掃描值合并，賦給temp
- }
-
- switch(temp)
- {
- case 0xee:i=1; break;
- case 0xed:i=2; break;
- case 0xeb:i=3; break;
- case 0xe7:i=4; break;
- case 0xde:i=5; break;
- case 0xdd:i=6; break;
- case 0xdb:i=7; break;
- case 0xd7:i=8; break;
- case 0xbe:i=9; break;
- case 0xbd:i=0; break;
- case 0xbb:i=10; break;
- case 0xb7:i=11; break;
- case 0x7e:i=12; break;
- case 0x7d:i=13; break;
- case 0x7b:i=14; break;
- case 0x77:i=15; break;
- }
- }
- else return 16;
- return i;
- }
-
- void display(uint temp) //顯示函數(shù)
- {
- uchar i;
- uchar z[6];
- z[0]=16;
- z[1]=temp/10000;
- z[2]=temp%10000/1000;
- z[3]=temp%1000/100;
- z[4]=temp%100/10;
- z[5]=temp%10;
- for(i=0;i<6;i++)
- {
- SBUF=tab1[z[ i]]; // 根據(jù)鍵位值找到鍵碼值，將鍵碼值賦給串行口發(fā)送寄存器
- while(!TI); //判斷串口數(shù)據(jù)發(fā)送是否完畢
- TI=0; //串口數(shù)據(jù)發(fā)送完畢標(biāo)志清0
- }
- }
-
- E(uchar n)
- {
- uint t=1;
- for(;n>0;n--)
- t=t*10;
- return t;
- }
-
-
- void main(void) //主函數(shù)
- {
-
- uint tem,tem1;
- uchar x,y,fh,j,k=0;
- uchar zhi[6];
- uchar zhi1[6];
- while(1)
- {
- if(x<5&&!k)
- { if(scanf()<10)
- {
- delay(5);
- if(scanf()<10)
- {
- if(x==0){zhi[0]=scanf();while(scanf()!=16);}
-
- if(x==1){zhi[1]=scanf();while(scanf()!=16);}
- if(x==2){zhi[2]=scanf();while(scanf()!=16);}
- if(x==3){zhi[3]=scanf();while(scanf()!=16);}
- if(x==4){zhi[4]=scanf();while(scanf()!=16);}
- x++;
- tem=0;
- for(y=0;y<x;y++)
- {
- tem=tem+zhi[y]*E(x-1-y);
- }
- display(tem);
-
-
- }
- }
-
- }
-
-
- if(scanf()>11&&scanf()<16)
- {
- delay(2);
- if(scanf()>9&&scanf()<16)
- {
-
- fh=scanf();
- while(scanf()!=16);
- k=1;
- }
- }
-
- if(j<5&&k)
- { if(scanf()<10)
- {
- delay(2);
- if(scanf()<10)
- {
- if(j==0){zhi1[0]=scanf();while(scanf()!=16);}
-
- if(j==1){zhi1[1]=scanf();while(scanf()!=16);}
- if(j==2){zhi1[2]=scanf();while(scanf()!=16);}
- if(j==3){zhi1[3]=scanf();while(scanf()!=16);}
- if(j==4){zhi1[4]=scanf();while(scanf()!=16);}
- j++;
- tem1=0;
- for(y=0;y<j;y++)
- {
- tem1=tem1+zhi1[y]*E(j-1-y);
- }
- display(tem1);
-
-
- }
- }
-
- }
- if(scanf()==11)
- {
- delay(2);
- if(scanf()==11)
- { while(scanf()==11);
- if(fh==12)tem=tem+tem1;
- if(fh==13)tem=tem-tem1;
- if(fh==14)tem=tem*tem1;
- if(fh==15)tem=tem/tem1;
- display(tem);
- j=0;
-
- }
- }
-
-
- }
- }
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