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proteus|基于51单片机计算器设计

单片机c语言proteus

【proteus|基于51单片机计算器设计】目录
一、项目功能
二、仿真
三、程序

资料下载地址：基于51单品阿吉计算器
一、项目功能 1、利用键盘及LCD1602作为计算器的输入及显示模块；
2、能进行加、减、乘、除的基本运算；按键有0~9，“+-*/=”。
3、有清零“CR"按键；
4、有记忆功能键，按下该键，可以直接显示并运用存储数据进行计算。
二、仿真 proteus|基于51单片机计算器设计
文章图片

proteus|基于51单片机计算器设计
文章图片

三、程序

#include #define uint unsigned int #define uchar unsigned charsbit e=P2^3; sbit rs=P2^4; sbit rw=P2^0; sbit busy=P0^7; char i,j,temp,num,num_1; long a,b,c; float a_c,b_c; uchar flag,fuhao; uchar code table[]={7,8,9,0,4,5,6,0,1,2,3,0,0,0,0,0}; uchar code table1[]={7,8,9,0x2f-0x30,4,5,6,0x2a-0x30,1,2,3,0x2d-0x30,0x01-0x30,0,0x3d-0x30,0x2b-0x30}; void delay(uchar z) { uchar y; for(z; z>0; z--) for(y=0; y<110; y++); }void check() { do{ P0=0xFF; rs=0; rw=1; e=0; delay(1); e=1; }while(busy==1); }void write_com(uchar com) { P0=com; rs=0; rw=0; e=0; check(); e=1; }void write_date(uchar date) { P0=date; rs=1; rw=0; e=0; check(); e=1; }void init() { num=-1; e=1; write_com(0X01); delay(1); write_com(0x38); delay(1); write_com(0x0c); delay(1); write_com(0x06); delay(1); write_com(0x80); delay(1); write_com(0x01); delay(1); num_1=0; i=0; j=0; a=0; b=0; c=0; flag=0; fuhao=0; }void keyscan() { P3=0xfe; if(P3!=0xfe) { delay(20); if(P3!=0xfe) { temp=P3&0xf0; switch(temp) { case 0xe0:num=0; break; case 0xd0:num=1; break; case 0xb0:num=2; break; case 0x70:num=3; break; }}while(P3!=0xfe); if(num==0||num==1||num==2) { if(j!=0) { write_com(0x01); j=0; } if(flag==0) { a=a*10+table[num]; } else { b=b*10+table[num]; } } else { flag=1; fuhao=4; } i=table1[num]; write_date(0x30+i); } P3=0xfd; if(P3!=0xfd) { delay(5); if(P3!=0xfd) { temp=P3&0xf0; switch(temp) { case 0xe0:num=4; break; case 0xd0:num=5; break; case 0xb0:num=6; break; case 0x70:num=7; break; } } while(P3!=0xfd); if(num==4||num==5||num==6&&num!=7) { if(j!=0) { write_com(0x01); j=0; } if(flag==0) { a=a*10+table[num]; } else { b=b*10+table[num]; } } else { flag=1; fuhao=3; } i=table1[num]; write_date(0x30+i); } P3=0xfb; if(P3!=0xfb) { delay(5); if(P3!=0xfb) { temp=P3&0xf0; switch(temp) {case 0xe0:num=8; break; case 0xd0:num=9; break; case 0xb0:num=10; break; case 0x70:num=11; break; }}while(P3!=0xfb); if(num==8||num==9||num==10)//??????'1','2'?'3'{if(j!=0){write_com(0x01); j=0; }if(flag==0)//???????{a=a*10+table[num]; }else//???????{b=b*10+table[num]; }}else if(num==11)//??????'-'{flag=1; fuhao=2; //2??????}i=table1[num]; write_date(0x30+i); }P3=0xf7; if(P3!=0xf7){delay(5); if(P3!=0xf7){temp=P3&0xf0; switch(temp){case 0xe0:num=12; break; case 0xd0:num=13; break; case 0xb0:num=14; break; case 0x70:num=15; break; }}while(P3!=0xf7); switch(num){case 12:{write_com(0x01); a=0; b=0; flag=0; fuhao=0; }//????"??"break; case 13:{//????"0"if(flag==0)//???????{a=a*10; write_date(0x30); P1=0; }else if(flag==1)//???????{b=b*10; write_date(0x30); }}break; case 14:{j=1; if(fuhao==1){write_com(0x80+0x4f); //?????,???????????????write_com(0x04); //?????????,???????,??????c=a+b; while(c!=0){write_date(0x30+c%10); c=c/10; }write_date(0x3d); //??"="a=0; b=0; flag=0; fuhao=0; }else if(fuhao==2){write_com(0x80+0x4f); //???????????????write_com(0x04); //?????????,???????,??????(?????????,????????)if(a-b>0)c=a-b; elsec=b-a; while(c!=0){write_date(0x30+c%10); c=c/10; }if(a-b<0)write_date(0x2d); write_date(0x3d); //??"="a=0; b=0; flag=0; fuhao=0; }else if(fuhao==3){write_com(0x80+0x4f); write_com(0x04); c=a*b; while(c!=0){write_date(0x30+c%10); c=c/10; }write_date(0x3d); a=0; b=0; flag=0; fuhao=0; }else if(fuhao==4){write_com(0x80+0x4f); write_com(0x04); i=0; c=(long)(((float)a/b)*1000); while(c!=0){write_date(0x30+c%10); c=c/10; i++; if(i==3)write_date(0x2e); }if(a/b<=0)write_date(0x30); write_date(0x3d); a=0; b=0; flag=0; fuhao=0; }}break; case 15:{write_date(0x30+table1[num]); flag=1; fuhao=1; }break; }}}main(){ init(); while(1) {keyscan(); } }


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