基于51单片机的计算器课程设计实验报告.doc下载

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项目一：简单计算器 1.实验题目：用51单片机实现简单的计算器功能 2.实验截图： 1).实验运行前截图： 2).实验运行后截图： 3.实验代码： #include #include #include #include #include unsigned char table1[16]; //1602第一行显示字符 unsigned char table2[16]; //1602第二行显示字符 unsigned char code table_error[] = "error"; /* 键扫描函数 */ unsigned char keyscan() //扫描键盘函数 { unsigned char key_l,key_h,addres,num; P0=0x0f; key_l=P0; P0=0xf0; key_h=P0; addres=key_l " key_h; if(addres!=0xff) { Delayms(1); if(addres!=0xff) { P0=0x0f; key_l=P0; P0=0xf0; key_h=P0; addres=key_l " key_h; switch(addres) { case 0xee:num='1';break; case 0xde:num='2';break; case 0xbe:num='3';break; case 0xed:num='4';break; case 0xdd:num='5';break; case 0xbd:num='6';break; case 0xeb:num='7';break; case 0xdb:num='8';break; case 0xbb:num='9';break; case 0xd7:num='0';break;//按键0 case 0xe7:num='C';break;//按键* case 0xb7:num='=';break;//按键# case 0x7e:num='/';break;//按键A case 0x7d:num='*';break;//按键B case 0x7b:num='-';break;//按键C case 0x77:num='+';break;//按键D } while(addres!=0xff) { P0=0x0f; key_l=P0; P0=0xf0; key_h=P0; addres=key_l " key_h; } return num; } } return 0; } void clear_lcd(void) //清屏 { unsigned char j; for(j=0;j<16;j++) { table1[j]='\0'; table2[j]='\0'; } } void main() { unsigned char i=0,j; unsigned char key; unsigned char flag_operator = 0; //加减乘除标志位 unsigned char flag_equ = 0; //等于标志位 unsigned char flag_key = 0; //运算位标志 bit flag_MaxValue = 0; bit flag_minus = 0;//负数 long int value = 0; //最终运算结果 unsigned long int value_H =0; //第一个数据 unsigned long int value_L = 0; //第二个数据 unsigned long int temp[]={1, 10, 100,1000,10000,100000,1000000,10000000,100000000}; Initialize_LCD(); while(1) { key=keyscan(); if(key != 0) { if(key == 'C') //清除键C按下 { clear_lcd(); i=0; flag_operator = 0; flag_equ = 0; value = 0; value_H =0; value_L = 0; flag_key = 0; flag_minus=0; } else { for(j=0; jhttps://download.csdn.net/download/qq_43934844/87506449?utm_source=bbsseo