How Combinational Logic Devices Work - The Learning Circuit

Things are starting to get complicated. In a previous episode, Karen talked about logic gates and digital logic. In this episode, Karen dives into the more complex, combinational logic devices: multiplexers, demultiplexers, encoders, and decoders.
Multiplexers and demultiplexers can be thought of as traffic controllers. They take their inputs and effectively “flip digital switches” in order to route the signals to various outputs. The main difference between the two is that multiplexers take multiple inputs and select which to route to a single output, while demultiplexers take a single input and select which of multiple outputs to route it to.
Encoders and decoders are used for more complex applications. They take one form of data and translate it into another form of data. Different varieties work with binary, decimal, binary-coded decimal (BCD), logic level, and 7-segment.
Have more information, or more questions about muxes, demuxes, encoders, or decoders? Post in the comments here: bit.ly/2ZUPCNP
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[@phildodd9942]

An excellent run-through, that is obviously designed to be paused during viewing so as to get full value from each chart. Like other Element 14 videos, an extremely valuable reference source for students to bookmark. Many thanks !

[@klong4128]

Very precised straight to the point explaining Combination/Sequential logics ,Multiplexer/Demultiplexer circuits ,Encoder/Decoder pdip pkgs ,7segments datasheets ,...ect . for absolute layman/beginners to start design a simple hardware digital circuitry on Breadboard ! Excelent ! You can use sofware Multisim/Fritzing simulation and verify with Cheap/7400/4000 hardware IC for verification, buildup competancy hands--practical .

[@keithcoltron3171]

element 14, simply the best, so well presented and easy to follow, thank you Karen.

[@MrCardeso]

Thanks, Karen!

[@sahars878]

Thank you so much, your videos really help me and save me. thanks a lot

[@jesusvasquez1613]

Love your videos

[@math1412]

Very excellent Karen

[@sefalibhakat143]

Fan of your knowledge

[@francescocamobreco6425]

Another great vid!

[@marcosyamgarcia6684]

Please, do you plan making videos solving questions? I noticed it's extremely hard to find anyone that shows on video things like using a truth table to implement a function using MUX or use ALU to complete a table.

[@samzx81]

This was a pretty good video :)

[@periklisgewrgiou5327]

Thank you so much for a difficult lesson

[@shafiqalom8408]

Tnx for informational video...I have a question that is - "How to choose electric components (voltage/current/others) to build up a proper big circuit?" I am very eager to know about it...

[@enriqueherrera5372]

Thank you I really appreciate your video I really like how you and everything

[@gurjantsingh6647]

Hi, You gave very good knowledge. I want to learning about electronic project. How are solve this problem.

[@DAVIDGREGORYKERR]

You could build a radio around using the 74AC00 as an oscillator and a 74AC74 as a quadrature phase generator which would drive a 74HC152 in conjunction with a few MC1450s that to configured as a Quadrature Sampling Detector which drive a quadrature phasing transformer which would drive a speaker via a power-amp and by changing the oscillator you change the frequency you receive. BTW the oscillator operates at 4x receive frequency.

[@josedominguez2021]

Supperb!!!!

[@Saadsug]

What is the uses of muxes and demuxes ?

[@markherring3513]

she lost me at 7:05 when she flipped the script saying LOWS began being represented as a 1..i was done after that. Still confused.

[@vaibhavjadhav4676]

You post best videos. Keep it up😘

[@mohameddoudou3285]

I don't know but i think there is a mistake here that the decoder who take 4 inputs and give us two outputs( if 8 inputs we'll get 4 outputs), and the encoder take two inputs and give us 4 outputs( if 4 inputs we'll get 8 outputs). That's what i have learned, correct me please if i'm wrong

[@husnainrafiq9689]

Hy Karen. Please make a video on logic analyser and function generator.

[@jalajchaturvedi472]

I may be wrong but isn't it true that only one of the inputs can be selected :A2(5) or B2(6). I noticed that at 2:12. Although I loved your video but I couldn't help but wonder whether this was a mistake on your part or a problem with my understanding.

[@ahmadsalman1856]

You are really amazing

[@fisforfriendship6093]

youve temperarily cured my insomnia

[@mrOga]

This beauty is so amazing

[@tomhankstomhanks2579]

What is the uses of mulitblxer and demiltiblixer???

[@element14presents]

Consider asking fellow engineers and makers on the e14 community: bit.ly/3FfHazj

[@masterelectricity7560]

U R the best

[@alfredsivanzire3552]

These IC make LED wires, letters, drawings,...beautify buildings in cities. Do they not?

[@debojitacharjee]

which software you use to create such diagrams and videos?

[@maker_karen1785]

The Adobe suite. I design the graphics in illustrator and we edit the videos in Premiere. Occasionally After Effects is used for animation.

[@alfredkaserekasivanzire9488]

👍

[@pathenterprises8240]

Hi

[@GeorgeGraves]

LS series of chips is SOoooooo spimple. I felt like that made it so much more complicated. Sorry!

[@Info-Tech-]

Wanna to be your soul mate.

[@QlueDuPlessis]

Didn't Element14 used to be British?