Learn in the textbookSignal Methods and Video Interfaces
DefinitionHDMI is an interface that carries video and audio together in digital form over a single cable.
ExplanationShort for High-Definition Multimedia Interface, it is widely used on home AV equipment such as TVs, recorders and game consoles, and PCs have it too. No separate audio cable is needed, and it can also exchange signals that let the connected devices work together.
AnalogyIt is like packing video and audio into the same delivery box and shipping them together.
Memory hookThe M stands for Multimedia: the name itself says it carries "many media", video plus audio.