Knowledge of SmartBoards and Promethium technologies

When reading the assignment requiring the class to write on their experiences with smart boards and Promethium technologies, I asked what the difference was between the two. This leads me to believe that I have very little knowledge on both topics. I do know that they both provide great assistance to a teacher. I have used what I believe is called an Elmo to deliver class presentations for different classes in the Speech and Hearing building. I am unsure if that is considered one of these technologies, but I am sure it does realte. I have heard great things about the two technologies, and I am very anxious to learn about what they can bring to me as a teacher and my future classroom.