Membuat kalkulator sederhana di matlab | kalkulator sederhana

Introduction

In this tutorial, we will create a simple calculator using MATLAB. This step-by-step guide will help you understand the process of programming basic arithmetic operations in MATLAB, making it an excellent exercise for beginners and a great way to enhance your computational skills.

Step 1: Setting Up MATLAB

• Open MATLAB on your computer.
• Create a new script by clicking on "New Script" from the home tab.
• Save the script with an appropriate name, such as simple_calculator.m.

Step 2: Designing the User Interface

• Use MATLAB's built-in functions to create a simple user interface.
• Start by defining a basic layout for your calculator. You can create buttons for each operation (addition, subtraction, multiplication, division) and a display area for the results.

Step 3: Writing the Code for Operations

• Define functions for each arithmetic operation. Below is a sample code structure:

function simple_calculator()
    % Create the user interface
    f = figure('Position', [500, 500, 300, 400]);

    % Create UI components
    num1 = uicontrol('Style', 'edit', 'Position', [50, 300, 200, 40]);
    num2 = uicontrol('Style', 'edit', 'Position', [50, 250, 200, 40]);
    result = uicontrol('Style', 'text', 'Position', [50, 200, 200, 40]);

    % Create buttons for operations
    uicontrol('Style', 'pushbutton', 'String', '+', 'Position', [50, 150, 40, 40], 'Callback', @(src, event) calculate(num1, num2, result, '+'));
    uicontrol('Style', 'pushbutton', 'String', '-', 'Position', [100, 150, 40, 40], 'Callback', @(src, event) calculate(num1, num2, result, '-'));
    uicontrol('Style', 'pushbutton', 'String', '*', 'Position', [150, 150, 40, 40], 'Callback', @(src, event) calculate(num1, num2, result, '*'));
    uicontrol('Style', 'pushbutton', 'String', '/', 'Position', [200, 150, 40, 40], 'Callback', @(src, event) calculate(num1, num2, result, '/'));
end

function calculate(num1, num2, result, operation)
    a = str2double(get(num1, 'String'));
    b = str2double(get(num2, 'String'));
    
    switch operation
        case '+'
            res = a + b;
        case '-'
            res = a - b;
        case '*'
            res = a * b;
        case '/'
            if b ~= 0
                res = a / b;
            else
                res = 'Error';
            end
    end
    
    set(result, 'String', res);
end

Step 4: Testing the Calculator

• Run the script by clicking the "Run" button in the editor.
• Input numbers in the text fields and click the operation buttons to see results displayed.
• Test different combinations of numbers and operations to ensure the calculator functions correctly.

Conclusion

You have now created a simple calculator in MATLAB that can perform basic arithmetic operations. This exercise not only enhances your programming skills but also gives you a foundation to build more complex applications in the future. For further improvements, consider adding features like error handling, memory functions, or a more advanced user interface. Happy coding!