Projection technology refers to the methods and devices used to display images or videos onto a surface, typically a screen or wall. This technology works by using light to project an image created by a computer or other media source. Common types of projectors include LCD (Liquid Crystal Display), DLP (Digital Light Processing), and LED (Light Emitting Diode) projectors, each with unique features and applications. This technology is widely used in various settings, such as classrooms, conference rooms, and home theaters. It enables larger-than-life presentations, making it easier for audiences to view content. Additionally, advancements in projection technology have led to innovations like 3D projection and interactive projectors, enhancing user experience and engagement.