Computer Hardware

HDMI

Definition

HDMI (High-Definition Multimedia Interface) is a proprietary audio/video interface for transmitting uncompressed video data and compressed or uncompressed digital audio data from an HDMI-compliant source device, such as a display controller, to a compatible computer monitor, video projector, digital television, or digital audio device.

Why It Matters

HDMI became the de facto standard for connecting consumer electronics, replacing a mess of older analog cables with a single digital cable for both high-definition video and audio.

Contextual Example

You use an HDMI cable to connect your gaming console, Blu-ray player, or computer to your TV.

Common Misunderstandings

  • There have been multiple versions of HDMI (1.4, 2.0, 2.1), each adding support for higher resolutions, faster refresh rates, and new features.
  • DisplayPort is a competing standard that is more common on computer monitors and often offers higher performance capabilities than HDMI.

Related Terms

Last Updated: December 18, 2025