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  • Televisions and related video components feature a handful of input/output options, with different cables available to make the connections. Each type of cable offers a varying degree of picture and sound quality; two of the main types are HDMI and RCA cables.

    HDMI

    HDMI (High Definition Multimedia Interface) cables contain the ability to transmit the video and audio data within a single cable, which features a rectangular connector at each end that tapers in at the bottom to enable an exact fit with the HDMI input port.

    RCA Cables

    RCA cables, also known as composite audio/video cables, were first developed by the RCA corporation and can be used to link a number of audio and video components. The cables are three-pronged: two for stereo audio, with red and white prongs, and one yellow prong for video.

    Differences

    RCA cables provide an analog connection, while HDMI is digital, allowing it to relay a greater amount of data and therefore a much higher quality video and audio signal. Of the two, only HDMI allows for high definition video and surround-sound audio.

    Usage

    HDMI is used to connect digital components that feature HD-quality picture and sound, linking a television to a cable or satellite receiver, DVD/Blu-Ray player or even a video game system. RCA cables are used when quality isn't a priority, to connect those same components as well as others, including VCRs and camcorders.

    Pros And Cons

    Along with the superior signal quality, the smaller, thinner HDMI cable takes up less space and only require the single connection. RCA cables, on the other hand, are more flexible and less likely to be damaged when bent than the more brittle HDMI cables, which also carry a much higher price tag than RCA cables.

    Source:

    HDMI

    AV Cable: RCA cables

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