Extended calculator functionality and improved evaluation logic

README.md

@@ -1,50 +1,66 @@
 # HEM Calculator
 
 A **Graphical User Interface (GUI)** calculator application built with Python's `tkinter` library.
-This calculator supports both basic arithmetic operations and advanced functions like square root, power, percentage, and binary/decimal conversions.
-This was for a group coursework academic and educational project.
+Originally developed for an academic group coursework project. 
+This upgraded version supports a wide range of basic and advanced mathematical functions, 
+error handling, and additional tools such as binary / decimal conversion.
 
-## Tech Stack
+## 🚀 Tech Stack
 ![Build Status](https://img.shields.io/badge/build-passing-brightgreen)
 ![License](https://img.shields.io/badge/license-MIT-blue)
 ![Python](https://img.shields.io/badge/Python-3.9+-blue)
 ![Tkinter](https://img.shields.io/badge/Tkinter-8.6+-blue)
 
-## Features
+## ✨ Features
 
-- **Basic Operations:**
+### Basic Operations:
   - Addition (`+`)
   - Subtraction (`-`)
   - Multiplication (`*`)
   - Division (`/`)
+  - Decimal support
 
-- **Advanced Functions:**
-  - Square Root (`√`)
+### Advanced Functions:
+  - Square Root (`sqrt()`)
   - Exponentiation (`x^y`)
   - Percentage (`%`)
-  - Binary to Decimal & Decimal to Binary Conversion
+  - Factorial (`!`)
+  - Trigonometric functions (degrees):
+    - sin(x) (`sin()`)
+    - cos(x) (`cos()`)
+    - tan(x) (`tan()`)
+  - Logarithmic functions:
+    - log₁₀(x) (`log()`)
+    - ln(x) (`ln()`)
+  - Absolute value (`abs()`)
+  - Rounding (`round()`)
+  - Constants π, e
 
-## Installation
+### Conversion tools
+- Binary → Decimal
+- Decimal → Binary
+
+## 📥 Installation
 
 1. Clone the repository:
    ```bash
    git clone https://github.com/morganmdx/randcoursework.git
    ```
 
-## Usage
+## 🖥️ Usage
 Once you run the program, a GUI window will appear. You can:
 
 Perform basic arithmetic operations by clicking the respective buttons.
 Use the advanced features (square root, exponentiation, percentage, and conversions) by clicking on the respective buttons.
 
-## Dependencies
+## 📦 Dependencies
 - Python 3.x
 - tkinter (standard Python library for GUI development)
 
-## Contributing
+## 🤝 Contributing
 Contributions are welcome! If you have suggestions or improvements, feel free to open an issue or submit a pull request.
 
-## License
+## 📜 License
 This project is licensed under the MIT License.
 License subject to change.
 See the LICENSE file for details.