51单片机开发 矩阵键盘简易计算器 LCD显示

#include"reg52.h" #include"math.h" #define uchar unsigned char #define uint unsigned int #define key P1 #define duan P2 #define wei P3 sbit led=P0^0; sbit buzzer=P0^1; uchar num,temp,num1,i=0; long bczs=0,czs=0,jiguo=0,jiguo1=0; uchar czs12=1; //输入数的选择标志位，１为第一个数，２为第二个数 uchar yiweiflag,qinflag; //移位标志 uchar code shuzi[12]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,0xff,0xbf}; //0~9,-, uchar code weizi[9]={0x00,0x80,0x40,0x20,0x10,0x08,0x04,0x02,0x01}; uchar code error[10]={0xff,0xaf,0xc0,0xaf,0xaf,0x86,0xff,0xff,0xff};//error uchar playshuzu[9],fuhao; uchar temp1[8],mm[4],temp2[8]; uchar zhi,weishu=0; void init(); //函数申明 uchar keyscan(); uchar scanzhi(); void display(); void duzhichuli(); void zhuandisplayjiguo(); void jiafa(); void jianfa(); void chengfa(); void chufa(); void qin(); void displayerror(); //====================================== void main() //主函数 { init(); display(); while(1) { duzhichuli(); } } //=============================================================================== void init() { uchar i; czs12=1; yiweiflag=1; //１不移 qinflag=0; //不清除 duan=shuzi[8]; wei=weizi[5]; playshuzu[1]=shuzi[0]; for(i=2;i<9;i++) playshuzu[i]=shuzi[10]; bczs=0;czs=0;jiguo=0,jiguo1=0; } //=============================================================================== void delay(uint x) { uchar y; for(x;x>0;x--) for(y=112;y>0;y--); } //==================================== uchar keyscan() { unsigned char recode,i,j; for(i=0;i<4;i++) { P1=~(0x01<<i); recode=P1>>4; if(recode<0x0f) { for(j=0;j<4;j++) {if(!(recode&0x01<<j))break;} return (i<<2)+(j+1); //返回键值 1-16 } delay(5); //延时5ms } return 0; //无按键返回 } //======================================== uchar scanzhi() { uchar zhi,k; k=keyscan(); switch(k) { case 0: zhi=27;break; case 1: zhi=7;break; case 2: zhi=8;break; case 3: zhi=9;break; case 4: zhi=24;break; // / case 5: zhi=4;break; case 6: zhi=5;break; case 7: zhi=6;break; case 8: zhi=23;break; //* case 9: zhi=1;break; case 10: zhi=2;break; case 11: zhi=3;break; case 12: zhi=22;break; //- case 13: zhi=26;break; //nc case 14: zhi=0;break; case 15: zhi=25;break; //= case 16: zhi=21;break; //+ } return(zhi); } //=========================================== void duzhichuli() { uchar tt,u; tt=scanzhi(); if(tt!=27) { led=0; buzzer=0; if(tt<=9)//数字输入 { if(qinflag==1) qin(); qinflag=0; if(yiweiflag!=1) { for(u=8;u>1;u--) //移位输入 { playshuzu[u]=playshuzu[u-1]; } } yiweiflag=0; //移位 playshuzu[1]=shuzi[tt]; if(czs12==1) bczs=bczs*10+tt; // if(czs12==2) czs=czs*10+tt; } if(tt>20)//符号输入 { switch(tt) { case 21: jiafa();break; //+ case 22: jianfa();break; //- case 23: chengfa();break; //* case 24: chufa();break; case 25: zhuandisplayjiguo();break; //= case 26: init();break; //nc } } } //----------------------------------------------- while(tt!=27) //松手检测 { led=0; buzzer=0; tt=scanzhi(); delay(1); if(tt==27) goto chu; } chu: delay(1); led=1; buzzer=1; } //============================================ void display() { TMOD=0x01; TH0=(65536-200)/256; TL0=(65536-200)%256; EA=1; ET0=1; TR0=1; } void TIME0(void) interrupt 1 { TH0=(65536-200)/256; TL0=(65536-200)%256; i++; if(i==9) i=1; wei=weizi[i]; duan=playshuzu[i]; } //=============================================== //显示数转操作数 void zhuandisplayjiguo() { uchar i,k; long ttt; for(i=1;i<9;i++) playshuzu[i]=shuzi[10]; //---------------------------------------- switch(fuhao) { case 1: jiguo=bczs+czs;break; case 2: jiguo=bczs-czs;break; case 3: jiguo=bczs*czs;break; case 4: jiguo=bczs/czs;break; case 0: jiguo=jiguo1;break; } fuhao=0; //---------------------------------------- ttt=jiguo; jiguo1=jiguo; //显示处理 k=1; //取数的个数 for(i=1;i<=8;i++) { if(ttt/10!=0) k++; ttt=ttt/10; } for(i=8;i>k;i--) { playshuzu[i]=shuzi[10]; } if(jiguo<0) { jiguo=fabs(jiguo);playshuzu[k+1]=shuzi[11]; } //取正加负号 for(i=1;i<=k;i++) { playshuzu[i]=shuzi[jiguo%10]; jiguo=jiguo/10; } if(jiguo1>99999999) displayerror(); } //=================================================== void qin() { uchar i; yiweiflag=1; //１不移 playshuzu[1]=shuzi[0]; for(i=2;i<9;i++) playshuzu[i]=shuzi[10]; } //=================================================== void displayerror() { uchar i; for(i=1;i<=8;i++) playshuzu[i]=error[i]; } //=================================================== void jiafa() //+ { qinflag=1; if(jiguo1!=0) bczs=jiguo1; czs=0; czs12=2; fuhao=1; //+ } void jianfa() { qinflag=1; if(jiguo1!=0) bczs=jiguo1; czs=0; czs12=2; fuhao=2; //- } void chengfa() { qinflag=1; if(jiguo1!=0) bczs=jiguo1; czs=0; czs12=2; fuhao=3; //* } void chufa() { qinflag=1; if(jiguo1!=0) bczs=jiguo1; czs=0; czs12=2; fuhao=4; // / }