CARA MUDAH MEMBUAT KALKULATOR DENGAN APP SCRATCH

Introduction

In this tutorial, we will guide you through the process of creating a simple calculator using Scratch, a visual programming language ideal for beginners. By the end of this tutorial, you'll have a functional calculator and a better understanding of basic programming concepts.

Step 1: Setting Up Your Scratch Project

• Open Scratch by navigating to the official Scratch website or launching the Scratch app.
• Click on "Create" to start a new project.
• Familiarize yourself with the Scratch interface, including the stage, sprite area, and code blocks.

Step 2: Designing the Calculator Interface

• Choose a sprite to represent your calculator. You can either draw one or select from the Scratch library.
• Position your sprite on the stage where you want the calculator to appear.
• Create buttons for numbers (0-9) and operations (addition, subtraction, multiplication, division).
  • Use the "Text" tool to label each button accordingly.

Step 3: Adding Functionality to Buttons

• For each number button:

  • Select the button sprite and go to the "Events" category.
  • Drag the "when this sprite clicked" block to the coding area.
  • Add a "set variable to" block from the "Variables" category to store the current number.

• For operation buttons:

  • Use the same "when this sprite clicked" block to trigger actions based on the selected operation.
  • Store the selected operation in a variable.

Step 4: Implementing the Calculation Logic

• Create a variable to hold the result of the calculations.
• When an operation button is clicked:
  • Use "if-else" blocks to determine which operation to perform based on the selected operation variable.
  • Ensure that the corresponding arithmetic operation is carried out using the numbers stored in the variables.

Step 5: Displaying the Result

• Create a display area on your calculator where the result will be shown.
• Use the "set" block to update this display variable with the result after calculations.

Step 6: Testing Your Calculator

• Click on the green flag to start your project.
• Test each button to ensure they correctly input numbers and perform calculations.
• Make any necessary adjustments to the code if you encounter issues.

Conclusion

Congratulations! You have successfully created a simple calculator using Scratch. This project not only helps you learn programming basics but also enhances your problem-solving skills. Feel free to expand your calculator with additional features, such as a clear button or advanced operations. Keep experimenting with Scratch to explore more creative projects!