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thanks for watching techwiki click the Subscribe button then enable

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notifications with the Bell icon so you won't miss any future videos so you've

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bought yourself a fancy new TV you've plugged in the power cord and an HDMI

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cable for your cable box and Bam you're ready to go but hold on a minute what's

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this Festival of multi-colored connectors on the back what are those

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even used for I mean those are basically everything use HDMI these days well

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while HDMI has superseded a lot of older

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standards those other Jacks can still be quite useful So today we're going to

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demystify the little ports you might find on the back of your TV or your AV

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receiver starting out with a venerable RCA connector this thing is named for

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the old radio Corporation of America who originally designed it as a simple

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analog connection for audio devices and actually goes all the way back to the

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1940s but because of its versatility and

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simplicity it still surprisingly common on Modern Electronics on the TV or

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receiver you're likely to find at least a pair of them one white and one red

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which correspond to left and right analog stereo audio channels

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respectively RC audio is still quite popular as it makes simple tasks like

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connecting a pair of speakers to your TV once you get sick of the tinny built-in

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audio rather straightforward but you may also see the grouped with a yellow Jack

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which carries composite video this supports a standard definition analog

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video signal and can be found on tons of VCRs DVD players and game consoles prior

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to the late 2000s so while composite video has fallen off in popularity due

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to its limited resolution and the fact it's more susceptible to interference

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than modern standards is still useful if you want to dust off the old N64 and

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enjoy some Ocarina of Time on your flat screen which isn't to say it's the best

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way to enjoy your retro games if your TV happens to have one of these dude as

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congrats you've got support for S video the idea behind it was that instead of a

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single conductor it had two using one for brightness information and another

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are for color now this cut down on interference and improved picture

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quality it was once popular on DVD players and even on some game consoles

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but it enjoyed only a very short time in the sun eventually getting mostly phased

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out in favor of what RCA again yeah so

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if you spot a green blue and red set of RCA jacks next to each other your device

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supports component video the idea here is similar to S video except that the

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green cable carries brightness information while the blue and red

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cables both carry color signals blue and reds respectively which makes a lot of

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sense right separating the signals out improves image quality even further and

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even enables high definition output component video was common on game

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consoles like the Xbox 360 and Playstation 3 for HD output to TVs

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before HDMI became super widespread and

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that brings us at last to the final thing you'll commonly see RCA connectors

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used for digital audio like Dolby 5.1

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usually it'll have a label that says coaxial on it but it should not be

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confused with the coaxial connector for cable TV service or an FM antenna

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because that's a totally different kind of cable the audio coaxial cable is

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built to a different internal spec than running the mill RCA audio cables but in

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practice you can probably get away with using a garden variety RCA cable as long

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as it isn't too long or you could just use this thing called a toslink

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connector for digital audio toslink is actually an optical standard so it uses

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light to transfer data over a specialized cable hence the reason

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tosslet connectors often glow on the back of your TV or receiver another

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Audio Only standard is the familiar 3.5 millimeter Jack for connecting

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headphones speakers which you'll find on computers audio players and older

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smartphones some equipment uses the larger quarter inch stereo connector

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which has the same functionality moving away from audio you may also find this

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dsub VGA connector which was very common on older computer monitors but since

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it's an analog standard it's more prone to interference so modern PCS have

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largely ditched it in favor of digital standards we felt like we needed to

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mention it anyway though because it's still included on some TVs and many

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projectors in case you need to connect something like an aging laptop now of

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course you might bypass using all of these and just go with this thing the

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HDMI connector which supports both high def video and audio along with

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networking on the same cable and although digital coaxial and toslink can

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only carry traditional surround sound like Dolby Digital and DTS only HDMI

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supports lossless floor mats like Dolby true HD and DTS Master audio the newest

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revision support High resolutions and refresh rate outputs as well as HDR for

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more realistic images a feature also found on HDMI's PC Focus competitor

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DisplayPort now on the subject of surround sound these aren't common on

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TVs themselves but if you have an AV receiver it's likely you'll find a Bank

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of old-fashioned two conductor speaker wire outputs for your speakers this tab

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style is normally found on the lower end and can also be used for AM radio

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antennas but if you go more fancy they'll probably look a little bit more

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like this now there are a couple of ways to connect to these guys either by

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stripping the wire and screwing it into place or by picking up some of what are

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called banana plugs and simply plugging them in as for the 0.1 of your however

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many 0.1 audio setup Standalone subwoofers usually still use RCA yeah

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when I said we were done with RCA I um I lied sorry now the funny thing here is

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that RCA isn't even the only shockingly old connector you'll find on the back of

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a receiver this rs-232 serial Port can

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be used both for firmware updates and hardwire remote control for folks who

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find infrared just not reliable enough for some reason and finally and this is

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true of both receivers and TVs you'll usually find some USB and Ethernet ports

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on Modern AV Equipment they can both be used for firmware updates and USB is

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great for everything from streaming media content to charging your game console controllers while Ethernet is

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for well I mean I don't think I really have to explain this but I'll do it

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anyway for the sake of completeness you can use it to connect to the Internet so

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you can stream content from online apps integrate with digital assistants and

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browse the internet if you're just a sucker for punishment

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techwiki and the how did you hear about this section okay guys as always thanks

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