matlab简易计算器设计步骤与回调函数设计费下载

matlab简易计算器设计步骤与回调函数设计费下载 简易算术计算器的设计 一、算术计算器的功能: 能进行简单的加、减、乘、除法运算，输入文本框显示为常量多项式，输出文本框显示为精确到小数点后十位的数值。计算器包含十个数字键0~9、小数点键“.”、小括号键“(”“)”、运算符号、清屏键、退格键、退出键等。 二、设计思路: 每按下一个数字键或者符号键的时候，利用get(handles.edit1,'string')获取当前输入文本框edit1的string属性，并通过字符串合并函数strcat()将当前输入文本框edit1的字符型string属性与按键的字符型string属性合并成字符串，然后利用属性设置函数set(); 将合并后的字符串返回到输入文本框edit1的string属性。当输入结束，用户按下等号的时候，采用x=get(handles.edit1,'string')获取当前输入文本框edit1的string属性，然后利用字符串执行命令y1=eval(x)计算输入文本框的表达式，得到的结果是字符型常量;然后利用字符串输出格式控制函数y=sprintf('%.10f',y1)使输出结果精确到小数点后十位;最后利用属性设置函数set(handles.edit2,'string',y)将转换后的字符串返回到输出文本框edit2的string属性。 三、设计步骤: 1、运行matlab 7.13版，进入主界面。 2、点击工具栏上的GUIDE图标进入GUI开发环境。 3、创建控件:Push Button包括数字0~9、运算符“+ - × ?”、功能键等十九 个，输入和动态静态文本框Edit Text，显示文字的静态文本框Static Text四个 等。 4、对控件单击右键弹出菜单，选择Property Inspector，设置控件属性。 控件属性表 BackgroundColor ForegroundColor FontFontStyle控件FontSizVisiTag String UnitWeigreegreee ble 类型 red blue red blue s ght n n Pushbutton1 1 Pushbutton2 2 Pushbutton3 3 Pushbutton4 4 Pushbutton5 5 16 Pushbutton6 6 Pushbutton7 7 Pushbutton8 8 Pushbutton9 9 pushbutton10 0 poin0.49， pushbutton pushbutton11 bold on 0 0 1 1 0 ts 8 , pushbutton12 43 × pushbutton13 ? pushbutton14 pushbutton15 = pushbutton16 . pushbutton17 Exit pushbutton18 Delete 16 pushbutton19 Clc Pushbutton20 ( Pushbutton21 ) text1 制作:*** text2 Input 16 0 0 1 poin0.830.810.78text bold on ts 1 6 4 text3 Output 0.740.74text4 算术计算器 20 0 9 9 edit1 空白字符串poinedit 10 on 1 1 1 0 0 0 ts edit2 空白字符串 5、选择工具栏上的Align Objects按键，调整控件布局。 6、选择工具栏上的Tab Oder Editor按键，通过和设置各控件的Tab顺序。 7、设计菜单: 在GUI开发环境下，选择工具栏上的进入菜单编辑器，分别选择和创建主菜单和 子菜单。 8、编写回调函数。 (1)数字键0的回调函数: % --- Executes on button press in pushbutton3. function pushbutton10_Callback(hObject, eventdata, handles) % hObject handle to pushbutton3 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键0的回调函数: %get函数获取输入文本框edit1的string属性，赋值给numbers，数值类型为char; numbers=get(handles.edit1,'string'); %字符串合并函数strcat()将按键"0"与numbers的值合并，将合并后的字符串返回到输入文本框edit1的string属性; set(handles.edit1,'string',strcat(numbers,'0')); %同理编写其余数字键、小数点键、小括号键、运算符号键; (2)数字键1的回调函数: % --- Executes on button press in pushbutton7. function pushbutton1_Callback(hObject, eventdata, handles) % hObject handle to pushbutton7 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键1的回调函数: numbers=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(numbers,'1')); (3)数字键2的回调函数: % --- Executes on button press in pushbutton7. function pushbutton2_Callback(hObject, eventdata, handles) % hObject handle to pushbutton7 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键2的回调函数: numbers=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(numbers,'2')); (4)数字键3的回调函数: % --- Executes on button press in pushbutton10. function pushbutton3_Callback(hObject, eventdata, handles) % hObject handle to pushbutton10 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键3的回调函数: numbers=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(numbers,'3')); (5)数字键4的回调函数: % --- Executes on button press in pushbutton9. function pushbutton4_Callback(hObject, eventdata, handles) % hObject handle to pushbutton9 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键4的回调函数: numbers=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(numbers,'4')); (6)数字键5的回调函数: % --- Executes on button press in pushbutton7. function pushbutton5_Callback(hObject, eventdata, handles) % hObject handle to pushbutton7 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键5的回调函数: numbers=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(numbers,'5')); (7)数字键6的回调函数: % --- Executes on button press in pushbutton6. function pushbutton6_Callback(hObject, eventdata, handles) % hObject handle to pushbutton6 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键6的回调函数: numbers=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(numbers,'6')); (8)数字键7的回调函数: % --- Executes on button press in pushbutton5. function pushbutton7_Callback(hObject, eventdata, handles) % hObject handle to pushbutton5 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键7的回调函数: numbers=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(numbers,'7')); (9)数字键8的回调函数: % --- Executes on button press in pushbutton8. function pushbutton8_Callback(hObject, eventdata, handles) % hObject handle to pushbutton8 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键8的回调函数: numbers=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(numbers,'8')); (10)数字键9的回调函数: % --- Executes on button press in pushbutton4. function pushbutton9_Callback(hObject, eventdata, handles) % hObject handle to pushbutton4 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %数字键9的回调函数: numbers=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(numbers,'9')); (11)小数点“.”键的回调函数: % --- Executes on button press in pushbutton17. function pushbutton16_Callback(hObject, eventdata, handles) % hObject handle to pushbutton17 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %小数点的回调函数; point=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(point,'.')); (12)加号“+”键的回调函数: % --- Executes on button press in pushbutton10. function pushbutton11_Callback(hObject, eventdata, handles) % hObject handle to pushbutton10 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %加号“+”键的回调函数; signs=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(signs,'+')); (13)减号“,”键的回调函数: % --- Executes on button press in pushbutton9. function pushbutton12_Callback(hObject, eventdata, handles) % hObject handle to pushbutton9 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %减号“,”键的回调函数; signs=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(signs,'-')); (14)乘号“×”键的回调函数: % --- Executes on button press in pushbutton7. function pushbutton13_Callback(hObject, eventdata, handles) % hObject handle to pushbutton7 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %乘号“×”键的回调函数; signs=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(signs,'*')); (15)除号“?”键的回调函数: % --- Executes on button press in pushbutton8. function pushbutton14_Callback(hObject, eventdata, handles) % hObject handle to pushbutton8 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %除号“?”键的回调函数; signs=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(signs,'/')); (16)左括号“(”键的回调函数: % --- Executes on button press in pushbutton21. function pushbutton21_Callback(hObject, eventdata, handles) % hObject handle to pushbutton21 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %左括号“(”键的回调函数; signs=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(signs,'(')); (17)右括号“)”键的回调函数: % --- Executes on button press in pushbutton20. function pushbutton20_Callback(hObject, eventdata, handles) % hObject handle to pushbutton20 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %右括号“)”键的回调函数; signs=get(handles.edit1,'string'); set(handles.edit1,'string',strcat(signs,')')); (18)等号“=”号键的回调函数: % --- Executes on button press in pushbutton15. function pushbutton15_Callback(hObject, eventdata, handles) % hObject handle to pushbutton15 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %等号“=”号键的回调函数; %get函数获取输入文本框edit1的string属性，并赋值与x; x=get(handles.edit1,'string'); %利用执行字符串命令eval()计算用户输入的表达式，得到的结果为char型; y1=eval(x); %利用字符串输出格式控制函数sprintf()将字符型常量精确到小数点后十位; y=sprintf('%.10f',y1); %利用属性设置函数set()将字符型结果返回到输出文本框edit2的string属性; set(handles.edit2,'string',y); (19)CLC键的回调函数: % --- Executes on button press in pushbutton19. function pushbutton19_Callback(hObject, eventdata, handles) % hObject handle to pushbutton19 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %CLC键的回调函数; %清空输入文本框edit1的string属性; set(handles.edit1,'String',''); %清空输出文本框edit2的string属性; set(handles.edit2,'String','0'); (20)Delete键的回调函数: % --- Executes on button press in pushbutton18. function pushbutton18_Callback(hObject, eventdata, handles) % hObject handle to pushbutton18 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %Delete键的回调函数; %get()函数获取当前输入文本框的string属性，并赋值与s1; s1=get(handles.edit1,'string'); %length(s1)函数获取s1字符串的长度，并利用s1(1:length(s1)-1)获取s1的第一个到第(length(s1)-1)个字符串，已达到删除前一个字符的目的; s2=s1(1:(length(s1)-1)); %利用属性设置函数set()将字符型结果返回到输入文本框edit1的string属性; set(handles.edit1,'string',s2); (21)Exit键的回调函数: % --- Executes on button press in pushbutton17. function pushbutton17_Callback(hObject, eventdata, handles) % hObject handle to pushbutton17 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %Exit键的回调函数; close; (22)菜单“关于”的回调函数: % -------------------------------------------------------------------- function Untitled_8_Callback(hObject, eventdata, handles) % hObject handle to Untitled_8 (see GCBO) % eventdata reserved - to be defined in a future version of MATLAB % handles structure with handles and user data (see GUIDATA) %显示的版权信息; message1=sprintf(['Copyright(C) 2012 *******\n\n','Version1.0\n\n','MyCalculator\n\n']); %读取图像，供关于消息框显示图标; [IconData,IconCMap]=imread('MyCalculator.png'); %弹出消息框; about=msgbox(message1,'版权信息','custom',IconData,IconCMap); %在按下确定按钮，关闭关于消息框前，不做其他操作; waitfor(about); 7、调试运行程序: