基于51單片機的計算器課程設計報告實驗報告

1、項目一：簡單計算器1 .實驗題目：用51單片機實現(xiàn)簡單的計算器功能2 .實驗截圖:1) .實驗運行前截圖:WL-S.I. 照 IJOI p工皿 印;由 邱4如 叩F.心 ”! H 午二町Fl 12 a. ,二 iX |J*1I P3 rtf n 1鵬q P3 1-AM丁尸皿行附T?!叫： 王理:A rP,£：曲_LLCD1 . 教育資料2) .實驗運行后截圖:KiILCDI】中 Fl二爾 n w 如 PliMB PlHMtt MTft 中 r rnuD 向EC n-fWTEIMI q-UMEZ 位Ml 乂，* f ”皿 火/加 K彳*瀉Q 短孫BEEc&S AB人回回回日3

2、.實驗代碼:#include<reg52.h> #include<intrins.h> #include<math.h> #include<defined.H>#include<LCD1602.h>unsigned char table116;/1602第一行顯示字符unsigned char table216;/1602第二行顯示字符unsigned char code table_error口 = "error"掃描鍵盤函數(shù)/*鍵掃描函數(shù)*/unsigned char keyscan() /unsigned c

3、har 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、='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;按鍵0 按鍵* 按鍵# 按鍵A 按鍵B 按鍵C 按鍵Dcase 0xd7:num='0'break;/case 0xe7:num='C'break; case 0xb7:num='='break;/ cas

5、e 0x7e:num='/'break;/ case 0x7d:num='*'break;/ case 0x7b:num='-'break;/ case 0x77:num='+'break;/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+)table1j='0'

6、;table2j='0' void main()unsigned char i=0,j;加減乘除標志位/等于標志位/運算位標志/最終運算結果/第一個數(shù)據(jù)/第二個數(shù)據(jù)unsigned char key;unsigned char flag_operator = 0;unsigned char flag_equ = 0;unsigned char flag_key = 0;bit flag_MaxValue = 0;bit flag_minus = 0;/ 負數(shù)long int value = 0;unsigned long int value_H =0;unsigned long

7、 int value_L = 0;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')/清除鍵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(

8、j=0; j<i; j+) table115-i+j = table115-i+j+1;table115 = key;table1i = key; i+；if(key ='=') for(j=0; j<16; j+)/確定運算符位置if(table1j='=') flag_equ = j; flag_key+; break;if( table1j = '+' | table1j = '-'| table1j ='*'| table1j='/') flag_operator = j; fl

9、ag_key+; for(j=16-i; j<flag_operator; j+)/ 第一個數(shù)據(jù)處理);/value_H = value_H + (table1j-48)* ( pow( 10 , (flag_operator-j-1)value_H = value_H + (table1j-48) * tempflag_operator-j-1;for(j=flag_operator+1; j<15; j+)/ 第二個數(shù)據(jù)處理/value_L = value_L + (table1j-48) * pow( 10 , (flag_equ-j-1);value_L = value_L

10、 + (table1j-48) * tempflag_equ-j-1;if(table1flag_operator = '+')value = value_H + value_L;else if(table1flag_operator='-')value = value_H - value_L;else if(table1flag_operator = '*') value = value_H * value_L;else if(table1flag_operator = '/')value = value_H / value_L

11、; if(value = 0)table215 = (value + 48);else if(value<0) value = abs(value);flag_minus = 1;else if(value>2000000000)flag_MaxValue = 1;/break;j=15;while(value!=0) table2j = (value%10 + 48); value = value/10;j-;if(flag_minus)/ 負數(shù)table2j='-' if(flag_key >2 | table10 = '0' | flag_MaxValue=1 ) ShowString(5,1,table_error);while(keyscan(