All You Need To Know About Logic Gates To Fix Stuff - Tutorial Guide

[@JimboMack]

love your vids, thanks for the knowledge 👍

[@surgingcircuits6955]

Very Good Vids. TY. Sidenote: After binging on your videos, I'm now saying "eyuhh?" a lot. Wife is looking at me weirdly. Florida, USA

[@justmc62]

Rich- you are the man . I am a master electrician by trade but have some electronic experience. Your tutorials have sparked my interest to master the electronic repair realm. Your humor , experience and knowledge provide an enjoyable learning enviroment ...Thank you .⚡

[@JS-fd7se]

You're more helpful than you realize. Thank you for your videos.

[@elenium115]

He is the best :)

[@knightwar3]

Nice explanation im looking for part 2

[@easyspeak101]

Very good explanation.. a fav design subject of mine.. multiplexers are often used as a logical alternative to LS gates. Cookbooks are a great starters resource if they still exist. Can you please mention anacronyms for beginners eg might not know meaning of GPU for example.. I always found late 80s navigating round both sides of boards and multilevel boards treacherous waters and ended quite a few careers.. Your patience and skills are exceptional! Thanks for videos.. some them CPU central processing unit boards look intimidating..! 🤒

[@nunosantos2589]

Hi, love your videos, just a quick correction, Roman Numerals are base 10 and not 5, not that it is important for what you are explaning, just puting it out there. Keep up the good work.

[@williamrudge175]

Sorry Richard you’re wrong. Electronics fall into 2catagories analogue and digital.linear is the relationship between various elements ie for linear relationship eg the ratio between voltage and current is constant. Digital has no relationship only 2 states on or off to represent the digits 1 and 0 the voltage or current levels are irrelevant. In analogue the relationship could be linear ,logarithmic,power or trigonometric.

[@gbondbasic]

absolute brilliant

[@seeithappen1]

You are one of the few making it clear that truly knowing logic gates is an illusion without first understanding the basic workings of transistors or fets with supplied, grounded or floating voltages that make up digital 1 and 0 or undefined in the real world. Which you can see in other videos from people who "think" they understand digital 1 and 0 or undefined, but simply are wrong about it. Great Video as always Richard, thanks for uploading.

[@NZHippie]

"All electronic components are linear" I disagree Richard, all passive electronic components are linear, all semiconductor components are non-linear that are usually operated in a linear region of their transfer characteristic. For example transfer characteristic of the silicon transistor is logarithmic not linear, it is biased to operate in the linear region... Enjoyed the video Richard, keep them coming... 🙂

[@Dutch_off_grid_homesteading]

Heya, now I see it again and I remember that I had that on my high school 32 years ago but this time it's much more clear to me thanks to your explanation thank you

[@davidhollfelder9940]

Great video on logic. I’ve seen NAND logic as well as NOR logic.

[@mUbase]

I enjoyed doing digital logic in College. Karnaugh maps. :)

[@avi4828]

The last time I studied this stuff was in 1984. You are a really good teacher and I wish I had you as my lecturer then

[@stevedebeukelaer1424]

Very nice tutorial richard.

[@midnightrizer]

NAND can be used to build the others it should be listed ahead of xor

[@garypoplin4599]

8:27 - Rather “one less” since you’re going negative.

[@romancharak3675]

Thank you for the refresher course on Logic Gates, Richard. But I must disagree with your statement that "Boolean Algebra is not important to know". I find it super useful in programming microcontrollers in Assembly Language, creating fast, tight code. Cheers!

[@LearnElectronicsRepair]

Roman Charak I didn't mean to say it is not important to know per se - I qualified that by saying it is not important for the *repair technician* to know 😉

[@nzvicman]

Any chance you have a video on a balboa spa pool controller?

[@garypoplin4599]

30:41 - Otherwise stated: the output is _not_ the input!

[@phillippatterson512]

All that low and high makes me want to get high. Lol 😂

[@phillippatterson512]

Well explained. Great job!

[@rafak9177]

I just happened to work on Aorus RTX3070 this weekend. Did some practice on my own as I was too impatient to wait for part 2 ;). I suspected an AND gate to be broken, not giving EN signal to PEX power supply. Pure luck that I had Gigabyte RTX2070 bought for repair as well. It had the same gates and power supply chips for 1.8 and PEX (GS9216). So I borrowed one of the gates, replaced it on the 3070, PEX and VMEM appeared and it works like charm! :D Thank you Richard!

[@tdtrecordsmusic]

Cool Stuff ! Looking forward to the next bits !! I'm currently checking my digital synthesizers to see if I can add an analog distortion path. Most synths are riddled with 74 series logic(even analog synths). So, I've gotta check whether or not they used all legs of the IC's(or how to add a 74 series) and probably the most difficult part is HOW to get the software to enable the new circuits. Adding buttons shouldn't be a problem ... Most synths use multiple DSP chips and I'm hoping its only going to be as difficult as >> Hijack/interrupt the digital signal with a DAC > Route signal to my custom analog distortion chain > back to digital realm with an ADC // inject/input the digital signal back into the DSP's ... For example : I have a supernova 2 and it has 9 DSP chips. There are 8 voices, So I am hoping that last DSP is the final effect stage.... Who knows... probably not gonna work & I'll have to just add my distortion chain to an analog synth. However, thats almost no fun as analog synths already sound great, but this is all about the journey... I just started last week. yeah, this is going to take a while. The most digital circuitry I've ever seen in one place is inside synths and old phone servers. especially old analog phone servers.

[@lrdisco2005]

DeMorgan theory, àssassaaaaaaAah

[@Foobar_The_Fat_Penguin]

42:00: Just in case anyone is wondering: Yes, it's (kind of) called NAND flash because of that. The individual memory cells are connected in serial, which resembles the arrangement of transistors in a NMOS NAND gate. Likewise in NOR flash, the cells are arranged in parallel. NAND flash can only be read in whole blocks, thus needing more software processing to get the data you want. But it's fast and cheap (takes up only about ⅖ of the precious die space). So it's ideal for file storage, since most file systems are block-oriented anyway. And conversely, NOR flash is more expensive and slower, but it offers direct random access (and lower latency). Which makes it ideal for code storage (ROMs for microcontrollers and such). In your PC, for example, you'll find NAND flash in the SSD containing the operating system. And the BIOS will most likely be contained in a NOR flash.

[@willjacobs1432]

This the best I have seen. Thanks.

[@TheDavidPoole]

Thanks for this video, it's the first of yours that I've seen. Took me right back to my college days learning electrical and electronic engineering. Your explanations are so much more succinct than my lecturers. Well, except one, the one who always said that transistors were a passing phase and that we'd go back to valves. He's right on the audio side, but he was a bit of a mad scientist. Jeffrey Combes type. Going to watch part 2 now.

[@gearstil]

Great video! But I think it would be useful if you draw the real implementation of every logic gate that you presented (e.g an inverter circuit)

[@Gt403cyl]

Great video, brought back memories of learning binary back in school in the mid-late 90's.

[@garypoplin4599]

24:30 - In all my life, I hadn’t noticed that there is an ‘r’ in every month of the year! Thanks for pointing that out.

[@MickMcMadder]

What a great video that was to watch.

[@laidman2007]

Another great lesson!

[@pmgear]

This gentleman´s videos are a goldmine, so much hard to come by knowledge made available easily and free. Truth be told, I learn more and deeper now 25 years after PhD degree in engineering through this gentleman and other likeminded youtubers, than I did when at Ivy league university

[@dondywondy]

This was so much fun! I haven't seen truth tables for many years and it was great reviewing the logic gate tables again. And I'm very much looking forward to part 2! As always thank you for your hard work, and your considerable electronics knowledge, making and posting these videos. So I have just joined your Patreon! I hope my little bit helps with the purchases needed to make these videos.

[@shooter3267]

Thanks Richard, easily the best explanation of logic gates that even I understood!

[@michaelsimpson6603]

Great video.

[@TheEmbeddedHobbyist]

The Nand is the universal gate of logic! You can make any other gate out of Nand gates. If I remember correctly NASA almost used up the world’s supply of Nand gates when building the Apollo Flight computers.

[@LearnElectronicsRepair]

Yeah I said that. and showed how to do it towards the end of this video 😉

[@shagreobe]

Great Video Richard! Never hurts to review those pesky little logic gates.

[@Savan_Triveda]

Yes, its one better on this channel🦊You are a real good teacher. Thank you.

[@jonathanrose456]

X

[@pred5258]

I really like the theory and the way you present it. Look forward to the op amps one.

[@nickyogorman1590]

D you do jobs on the side ? I've a ti g welder that dont work ...3 circuit boards...no one here in republic of ire seems to know or want to know anything about them , love to get it going as it was my dads ...

[@LearnElectronicsRepair]

email me [e-mail]

[@tomasmolina8617]

I'm amazed how clear this tutorial was that I did understood the whole thing. now i'm searching for your others tutorials. Thank you for sharing your knowledge.

[@LearnElectronicsRepair]

Thanks! Check out the playlist 'All You Need To Know About...' amongst others kzbin.info/aero/PLQ_OzNEYrepVlm02UxQRa40_B-2YyblHv

[@ragnvaldlarsen7353]

Takk!

[@jameskidd7906]

Simple ,easy, thank u sir

[@wherami]

Always informative!

[@Electricworld-1]

I love you Richard.

[@giorgostexnikos6976]

excellent video

[@kriswillems5661]

Analogue and digital. A linear circuit is a kind of analogue circuit. There are also logarithmic circuits, and many other kinds of analogue circuits.

[@kriswillems5661]

A diode for instance is non linear but analogue....

[@LearnElectronicsRepair]

@@kriswillems5661 Sure. As I mentioned, all electronic components are actually linear (or analogue) - even the ones we think of as 'digital'

[@kriswillems5661]

I think you mixed up linear and analogue. You said a diode is linear, but it not....

[@kriswillems5661]

A linear circuit adds, multiplies and offsets signals. If you put a sine wave into it all currents and voltages will be sine waves. A diode rectifier is not linear, because if you put a sine wave into it, the output is not a sine wave. All circuits only containing resistors, capacitors and coils are linear. But as soon as you introduce a semiconductor into a circuit it is at best partially linear. For instance when you use a transistor in a class A amplifier the only thing that is linear is the current amplification, but the base emitter diode is still acting non linear. Wherever you said linear, you should probably have said analogue...All linear circuits are analogue, but not all analogue circuits are linear.....

[@kriswillems5661]

A metal oxide varistor would be an example of a passive component that is not linear.