mihail859/pythoncalculator

PythonCalculator

If you want to test it, click here: https://replit.com/@mihail859/calculator

To see it click here: https://github.com/mihail859/PythonCalculator/blob/main/Demo.png

Calculator Program Documentation

Introduction: The Calculator Program is a graphical user interface (GUI) application developed using Python's tkinter library. It provides basic arithmetic and scientific calculations to help users perform mathematical operations conveniently.

Features:

• Arithmetic operations: addition, subtraction, multiplication, division.
• Clear and backspace functionality.
• Error handling for division by zero and invalid inputs.

User Interface:

• Entry field: Allows users to input numbers and mathematical expressions.
• Buttons: Provides buttons for numbers, arithmetic operations, and other functions.
• Result display: Displays the calculated result or error messages.

Usage:

1. Run the Calculator Program.
2. Input numbers and operations using the buttons or the keyboard.
3. Click on the "=" button to calculate and display the result.
4. Use the "Clear" button to clear the input field.

Plan to Build Calculator Program:

1. Design the User Interface:

   • Sketch out the layout of buttons, entry field, and result display.
   • Organize buttons logically and group similar operations.

2. Set Up the GUI:

   • Import the tkinter library.
   • Create the main application window and set its title.

3. Create UI Elements:

   • Add an entry field for input.
   • Create buttons for numbers, arithmetic operations, and functions.

4. Implement Basic Operations:

   • Set up functions to handle addition, subtraction, multiplication, and division.
   • Bind these functions to their respective buttons.

5. Add Scientific Operations:

   • Implement functions for square root and exponentiation.
   • Create buttons for these scientific functions.

6. Update Display:

   • Update the entry field or display area with the calculated result or error message.

7. Clear and Backspace:

   • Implement functions to clear the input field and remove the last entered character.

8. Keyboard Input:

   • Bind keyboard keys to appropriate functions for numeric and operational input.

9. User Testing:

   • Test the calculator program with various inputs and operations.
     • Check for correctness, error handling, and user experience.

Author: Mihail Zhelyazkov Date: 07.08.2023