This is one way of many technology advancements over the years that have been provided to classrooms, conference rooms, and meeting rooms.
With the help of projectors, instructors and presenters can now connect their own personal laptop and present the material that is necessary for participants to follow along. While presenting to a class or during meetings, instructors and presenters may find it difficult and time consuming to print out packets of reading material so participants can follow along on what is being presented.