diff --git a/iameugeneyeboah/challenge_one/README.md b/iameugeneyeboah/challenge_one/README.md
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+# Traffic Light System Simulation
+
+This project simulates a traffic light system using LEDs (Arduino version)
+and a console-based simulation (Python version).
+The program follows a basic traffic light sequence:
+
+- Red light: ON for 5 seconds
+- Green light: ON for 5 seconds
+- Yellow light: ON for 2 seconds
+
+## Features
+
+- **Arduino Implementation**: Controls physical LEDs connected to an Arduino board.
+- **Python Simulation**: Simulates the traffic light system in the console.
+- **Customizable Timing**: Light durations can be adjusted.
+
+---
+
+## Setup Instructions
+
+### Arduino Implementation
+
+1. **Hardware Requirements**:
+   - Arduino board
+   - Red, Yellow, and Green LEDs
+   - Resistors (220 ohms recommended)
+   - Breadboard and jumper wires
+
+2. **Circuit Diagram**:
+   - Connect the Red LED to pin **13** with a resistor.
+   - Connect the Yellow LED to pin **12** with a resistor.
+   - Connect the Green LED to pin **11** with a resistor.
+   - Connect all LED ground ends to **GND**.
+
+3. **Upload Code**:
+   - Copy the Arduino code (see `traffic_light.ino`) into the Arduino IDE.
+   - Connect your board and upload the code.
+
+### Python Simulation
+
+1. **Requirements**:
+   - Python 3.x
+   - No external libraries required
+
+2. **Run the Code**:
+   - Save the Python script as `traffic_light.py`.
+   - Run the script in your terminal using:
+
+     ```bash
+     python traffic_light.py
+     ```
+
+---
+
+## Testing
+
+### Test Cases
+
+1. **Arduino Testing**:
+   - Verify each LED lights up at the correct time (Red → Green → Yellow).
+   - Test light durations by measuring the time each light stays on.
+
+2. **Python Testing**:
+   - Ensure the console outputs match the sequence and timing.
+   - Modify the `time.sleep()` values to confirm timing adjustments work.
+
+### Test Results
+
+| Test Scenario                          | Expected Behavior
+|----------------------------------------|--------------------------------------
+| Arduino lights up Red → Green → Yellow | Correct sequence followed
+| Timing for each light                  | Red: 5s, Green: 5s, Yellow: 2s
+| Python simulation sequence             | Console shows correct light sequence
+| Console simulation timing              | Red: 5s, Green: 5s, Yellow: 2s
+
+## Future Improvements
+
+- Add a pedestrian crossing button.
+- Integrate a real-time clock for dynamic timing.
+- Add sound effects (buzzer) during the Yellow light phase.
diff --git a/iameugeneyeboah/challenge_one/project_one.cpp b/iameugeneyeboah/challenge_one/project_one.cpp
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+// Define LED pins
+const int redLight = 13;   // Red LED connected to pin 13
+const int yellowLight = 12; // Yellow LED connected to pin 12
+const int greenLight = 11;  // Green LED connected to pin 11
+
+void setup() {
+  // Set all LED pins as outputs
+  pinMode(redLight, OUTPUT);
+  pinMode(yellowLight, OUTPUT);
+  pinMode(greenLight, OUTPUT);
+}
+
+void loop() {
+  // Turn on Red Light
+  digitalWrite(redLight, HIGH);
+  digitalWrite(yellowLight, LOW);
+  digitalWrite(greenLight, LOW);
+  delay(5000); // Wait for 5 seconds
+
+  // Turn on Green Light
+  digitalWrite(redLight, LOW);
+  digitalWrite(yellowLight, LOW);
+  digitalWrite(greenLight, HIGH);
+  delay(5000); // Wait for 5 seconds
+
+  // Turn on Yellow Light
+  digitalWrite(redLight, LOW);
+  digitalWrite(yellowLight, HIGH);
+  digitalWrite(greenLight, LOW);
+  delay(2000); // Wait for 2 seconds
+}
diff --git a/iameugeneyeboah/challenge_one/test.cpp b/iameugeneyeboah/challenge_one/test.cpp
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+#include <iostream>
+#include <thread>
+#include <chrono> // For delays
+
+using namespace std;
+
+void trafficLightSimulation() {
+    while (true) {
+        // Red Light
+        cout << "🔴 Red Light ON" << endl;
+        this_thread::sleep_for(chrono::seconds(5)); // Wait for 5 seconds
+
+        // Green Light
+        cout << "🟢 Green Light ON" << endl;
+        this_thread::sleep_for(chrono::seconds(5)); // Wait for 5 seconds
+
+        // Yellow Light
+        cout << "🟡 Yellow Light ON" << endl;
+        this_thread::sleep_for(chrono::seconds(2)); // Wait for 2 seconds
+
+        cout << endl; // Add space before restarting the cycle
+    }
+}
+
+int main() {
+    cout << "Starting Traffic Light Simulation..." << endl;
+    trafficLightSimulation();
+    return 0;
+}
diff --git a/iameugeneyeboah/challenge_two/README.md b/iameugeneyeboah/challenge_two/README.md
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+# To-Do List App
+
+## Overview
+
+This is a simple To-Do List application built in Python.
+The program allows users to add, view, and delete tasks from a to-do list.
+The list of tasks is saved to a file (`todo.txt`)
+so that the tasks persist across program runs.
+
+## Features
+
+1. **Add Task**: Allows the user to add a task with a description.
+2. **View Tasks**: Displays all tasks in the to-do list.
+3. **Delete Task**: Allows the user to delete a task by specifying its task number.
+4. **Persist Data**: The tasks are saved in a file (`todo.txt`)
+5. and are reloaded when the program restarts.
+
+## Technologies
+
+- Python 3.x
+- File handling (Text file for storing tasks)
+
+## Setup
+
+1. Clone or download the repository.
+2. Ensure Python 3.x is installed.
+3. Run the program using a Python interpreter.
+
+## Usage
+
+- Run the program using the following command:
+
+  ```bash
+  python todo_list.py
diff --git a/iameugeneyeboah/challenge_two/portfolio_manager.py b/iameugeneyeboah/challenge_two/portfolio_manager.py
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+++ b/iameugeneyeboah/challenge_two/portfolio_manager.py
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+def load_tasks(filename="todo.txt"):
+    """Load tasks from a file."""
+    try:
+        with open(filename, "r") as file:
+            tasks = file.readlines()
+        return [task.strip() for task in tasks]
+    except FileNotFoundError:
+        return []
+
+def save_tasks(tasks, filename="todo.txt"):
+    """Save tasks to a file."""
+    with open(filename, "w") as file:
+        for task in tasks:
+            file.write(task + "\n")
+
+def add_task(tasks):
+    """Add a new task to the list."""
+    task = input("Enter the task description: ")
+    tasks.append(task)
+    save_tasks(tasks)
+
+def view_tasks(tasks):
+    """Display all tasks."""
+    if tasks:
+        print("\nTo-Do List:")
+        for idx, task in enumerate(tasks, start=1):
+            print(f"{idx}. {task}")
+    else:
+        print("\nYour to-do list is empty.")
+
+def delete_task(tasks):
+    """Delete a task from the list."""
+    try:
+        task_num = int(input("Enter the task number to delete: "))
+        if 1 <= task_num <= len(tasks):
+            tasks.pop(task_num - 1)
+            save_tasks(tasks)
+            print("Task deleted successfully.")
+        else:
+            print("Invalid task number.")
+    except ValueError:
+        print("Please enter a valid number.")
+
+def main():
+    tasks = load_tasks()
+
+    while True:
+        print("\nTo-Do List Menu:")
+        print("1. Add Task")
+        print("2. View Tasks")
+        print("3. Delete Task")
+        print("4. Exit")
+
+        choice = input("Choose an option: ")
+
+        if choice == '1':
+            add_task(tasks)
+        elif choice == '2':
+            view_tasks(tasks)
+        elif choice == '3':
+            delete_task(tasks)
+        elif choice == '4':
+            print("Goodbye!")
+            break
+        else:
+            print("Invalid choice. Please try again.")
+
+if __name__ == "__main__":
+    main()