HDMI, or High-Definition Multimedia Interface, is a widely used interface for transmitting high-quality audio and video signals between devices. It is commonly found in televisions, computers, and gaming consoles, allowing users to connect their devices seamlessly while maintaining high fidelity. The HDMI standard supports various resolutions and formats, including 4K and 3D, making it a versatile choice for modern multimedia applications. With its ability to carry both audio and video through a single cable, HDMI simplifies connections and enhances the overall viewing experience for users.