A projector is a device that takes images or videos from a computer or other source and displays them on a larger screen or surface. This makes it easier for groups of people to see presentations, movies, or slideshows. Projectors are commonly used in classrooms, offices, and home theaters, allowing everyone to enjoy visual content together. There are different types of projectors, including LCD, DLP, and LED projectors, each with its own technology and benefits. Some projectors are portable, making them great for travel, while others are designed for permanent installation in a room. Overall, projectors enhance the viewing experience by making it more engaging and interactive.