Stands for "High-Definition Multimedia Interface." HDMI is a digital interface for transmitting audio and video data in a single cable. It is supported by most HDTV's and related components, such DVD and Blu-ray players, cable boxes, and video game systems.

While other types of A/V (Audio/Visual) connections require separate cables for audio and video data, HDMI carries the audio and video streams together, greatly eliminating cable clutter. For example, a component cable connection requires three cables for video and two for audio, totalling five cables in all. The same information can be transmitted using one HDMI cable.


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Because HDMI is a digital connection, HDMI cables are less prone to interference and signal noise than analog cables. Also, since most components, such as DVD players and digital cable boxes process information digitally, using HDMI eliminates the analog to digital conversion other interfaces require. Therefore, HDMI often produces the best quality picture and sound compared to other types of connections.

Pretty much all devices, such as TV's, Blu-ray players etc. Now use a HDMI connection. It is becmoing the standard of connection for A/V with the exception of some computers using VGA and DVI connectors. One of the last time's I saw and used a component cable, where back when the Xbox 360 was launched! Just for those interested what the quality difference in terms of picture looks like check out the video below



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