Calculator GUI

A simple graphical calculator application built with Python and Tkinter.

Description

This is a desktop calculator application with a user-friendly GUI that allows you to perform basic arithmetic operations. It features a clean interface with buttons for digits, operators, and functions.

Features

• Number Buttons: Buttons for digits 0-9 to enter numbers
• Arithmetic Operations: Support for addition (+), subtraction (-), multiplication (*), and division (/)
• Clear Button: Clear the display with the "C" button
• Equals Button: Calculate the result of your expression
• Keyboard Support: Press Enter to calculate the result
• Error Handling: Displays "Error" if an invalid expression is entered

Requirements

• Python 3.x
• Tkinter (usually included with Python)

Installation

1. Clone or download this repository
2. Ensure Python 3.x is installed on your system
3. Tkinter should be included with your Python installation

Usage

1. Run the calculator:

   python Calculator.py
   

2. Use the buttons to enter numbers and operators

3. Click the "=" button or press Enter to calculate the result

4. Click "C" to clear the display

How It Works

• GUI Layout: The calculator uses Tkinter to create a grid-based button layout with a text entry field at the top
• Calculation: The calculate() method uses Python's eval() function to evaluate mathematical expressions
• Error Handling: If an invalid expression is entered, the calculator displays "Error"

Button Layout

| 1 | 2 | 3 | +  |
| 4 | 5 | 6 | -  |
| 7 | 8 | 9 | *  |
| C | 0 | = | /  |

Example

1. Click buttons: 5 + 3
2. Click "=" or press Enter
3. Result: 8

License

This project is open source and available for personal and educational use.