An Introduction to Logic Gates

A simple introduction to logic gates, covering transistors, Boolean Algebra, AND OR NOT NOR NAND XOR and XNOR gates and how to build a very basic computer.

[@seanocansey2956]

I think this is the best description of this I have ever seen!

[@minesupermario]

+Sean Ocansey Agreed

[@poovithanvasikaran4067]

But I think for beginners that's at first a good description.

[@catteyisaboar4241]

I am 67 years old and finally found a clear description. all of a sudden I not only understand how gates are made but I no longer fear flipflops. you are on of the two amazing teachers I've had the pleasure of listening to.

[@charlesyoung1780]

You're a hell of an instructor the way you bring the information down to a beginner's level is amazing it's very hard for me to learn complex concepts but you broke it down and made it palatable you're awesome thanks

[@TheDarkwolves1]

To speak for so long with such an outstanding will to make us understand.. I thank you sir for your videos are really helpful to me :D

[@hugo72charles]

This fellow is very good in his explanations. Some people are hopeless in explaining even if they understand the subject themselves.

[@brianpacker2788]

Thank you so much for making this video. Better than 99% of TV programs.

[@udayteja9125]

i loved the whole video, understood each and every part clearly,excellent explanation

[@DrPhysicsA]

Thanks

[@redmartians]

This is the most precious 50 minutes I've ever spent! Great stuff!!

[@axiom2250]

You are the best teacher i have ever seen. I had trouble to understand how to make a basic computer from logic gates, and how the circuit is basically made. Now it's a lot clearer.

[@jwhiz3219]

Very clear and well articulated explanation of Logic Gates. Thanks very much for making this video! As far as I am concerned, you hit a home run on this.

[@ColonelDecker001]

I particularly appreciate the fact that you did the whole thing in one take and left the mistakes in (and highlighted them with comments). Makes you human and even more accessible. Well done. Great stuff.

[@crytman1]

The best explanation ever of logic in reference to transistors. Never thought I could have understand this so clearly as I just did. You are wonderful.

[@Naz-yi9bs]

Thank you for all of your channel! Just came across it and I'm in heaven, so much to learn and your style is very detailed, I'm lucky, thanks to you.

[@martinmadsen1199]

Thank you for taking the time. The pace by which you introduce the material is perfect.

[@jameshanley9102]

we did all this stuff in my hnc course at college i flippin love this stuff its great what you can do with logic gates really . and this guy has put it in a very good manner of understanding too

[@Mahp46]

Sir, you've done a great job explaining it! Now I find the very idea behind logic gates just so beautiful. Thank you very much!

[@reliefguitarist]

This is hands-down the best explanation of this I've found. Thank you!

[@jkuebler89]

My goodness thank you a million times over good sir, like everyone else here commenting this is by far the best explanation I've come across, leaps and bounds. Super clear and concise, no one else can touch this level of quality. Alright time to remove my nose from your rear and back to studying.

[@fredflintstone3956]

This is brilliant! I wish you had been one of the instructors when I was trying to learn all this back in the 80s in the Navy. The only way it finally hit for me was reverting back to my knowledge of plumbing, with pipes instead of wires, flow restrictors (orifices) instead of resistors, and spring-loaded valves in place of transistors.

[@iftakharalam1650]

One of the best lecturers, i have watched and took notes in my life.

[@dabulls1g]

Easily the best instructional video on the subject for KZbin. Your materials is incredible and your knowledge is unsurpassed, excellent work.

[@JO-mg6xc]

Dear Dr. Physics A: Thank you for theses videos, they are a fantastic way to understand logic circuits. You are a great teacher. I love the pre-traced board, so no time is wasted.

[@sammys222]

there are many many books out there and websites... but it is this video that gives a thoroughly simplistic explanation of how this works! thank you sooo much!

[@mk1cortinatony395]

Awesome description here. I found this randomly looking for what makes up the AND and NAND gates internally and you have it covered nicely. Thank you :)

[@kpmaynard]

What a lucid presentation!! I would take every one of your classes. Thank you so much.

[@hakanerten6597]

Very clear and more comprehensive than any other similar videos. Thanks a lot!

[@ClassicContent]

This is amazing, you have made me realise the true utility of what we do at school. You are doing some great work.

[@pacrat90]

What a great video! Watching this and fiddling on my circuit simulator on my WP8 phone helped me to understand how these gates work and gave me a better understanding of NPN transistors too!

[@freakdog9090]

very helpful video for someone who hasn't touched on electronics for a long time, thanks for descriptions and visual aids, also the construction using transistors was completely necessary for my needs! keep the videos up!

[@mazengomaa27]

Man, in the past i had a big problems with logic but now i love them Thank you

[@anapaulinacabrera]

ohhhh my good, this was by far the best transistors video I ever watched, so easy to understand, thank you!!!!

[@varunadesilva2930]

Excellent Tutorial. I was just brushing up to go through with my son as he is doing GCSE this year. I will be asking him to go through this by him self now. thanks for the valiant effort, well constructed, simply explained.. thanks very much

[@mukundvs7635]

the beest logic tutorial i've found on youtube till date

[@bendoherty7721]

Thankyou for taking your time out of our precious lives with never enough time to gives us something to learn from

[@heisenberg9699]

idk how many videos I have watched about logic gates but this one is the best thank you a lot sir

[@desideriobanzonjr6771]

Very brief and concise. It adds my idea and understanding to these logic gates way back in college days.

[@Niaengineer]

wow.simply amazing. this has seriously ignited an interest in me ,for this subject.thanks professor.

[@williamwelmans3026]

Excellent teaching video. I learned more in your program then I did in my first year at college. Cheers !

[@adandridsr]

Excellent presentation. No nonsense, straight to the point, clear explanations. Will be viewing more of your vids if available. Thanks you very much.

[@DrPhysicsA]

When there is an input voltage, the transistor behaves like a closed switch. So all of the points from the ground position up to the resistance are at 0V. This means that there is no output voltages to drive the light emitting diode.

[@martyhastings9347]

I will not "say" my age, but when i was in school, non of my professors where as good as you where in this video. most times we used the truth tables (supplied by the chips manufacturer) to pick the required component with the desired output for our circuits. great refresher class. thanks.

[@farsidekiki]

THANK YOU! This made logic gates sooo clear and straightforward.

[@lblmer]

One of the best videos on youtube. Enormously informative.

[@tomthumb3085]

This is my favourite subject. Brilliantly explained and demonstrated. Great video, thanks.

[@DrPhysicsA]

Essentially they detect any changing voltage on the input. They then react accordingly.

[@latengocomoburro]

I have been looking for this information for years. Literally.

[@ananditasharma3751]

sir I am in the midst of this lecture.....and I couldn't wait to thank you....... really thanks alot for your efforts.👌👍

[@sixstringmarauder]

Smashing video doctor, absolutely great.

[@thebrakshow7415]

Wow, that was a fantastic lesson. Wish this was around 5 years ago when I was in college learning logic gates.

[@themvlek]

This video is exactly what I was looking for. Thanks.

[@ba5916]

this video is so descriptive. now i understand so many things that have been confusing,thanks a lot

[@amyfrost3790]

Thanks bud. I needed to learn how this works so I can make a full adder. -Great video!

[@frgmntTOB]

I am so glad you corrected your little mistake at 10:12. This morning I woke up with your video about the physics of black holes, hawking radiation etc. after going to sleep with a science fiction short story and accidentally having autoplay on. I immediately loved your style of explanation. Subscribed!

[@mr.woowoo8826]

I'm in school for electronics and I wanted to learn about logic gates, so I chose your video and was going to sub you, but already had!!! AWESOME!!!

[@cherchetutrouve6056]

my opinion ,you are the best , you have a voice of a teacher , thank you verry mutch ,sir .

[@samadkhan6934]

when u made play ground to teach us about logic gates and finished it, i paused the video there............ and gave a like first before going on. your way of teaching is excellent, sir! Thank you! :D

[@e12314]

Thank you for this video. After having watched many others about transistors, I finally understand how it works thanks to this one and the atmoic physics 3.

[@dav625]

Don't know how you do it, but you got it through and through - clear, well expliciet. A subject complicated to understand by other lecturers, suddenly seems so easy.

[@juni172]

Perfect explanation, this intro could not have been better.

[@ThousandStars1000]

My friend has been doing computer science gcse for months now but I think I just learned more than him in 40mins. Thank you.

[@nikofox8652]

Very good video! It's good to know the principles of logic gates, which are the base of integrated circuits. Also, I've learned the feautures of and why the transistors are so much important. Thank you! I appreciate your work and will come to see more!

[@williamroldan2830]

Very awesome explanation. This is the only time I undertand this. Very well explained...

[@peterdavies1160]

Thanks very much for this clear and logical explanation which builds over the course of the video to offer a coherent explanation.. I found it a great help! I am always amazed at how arrogant a few people can be when they criticize and 'grade' your effort. They clearly haven't tried it themselves and have no idea what is involved!

[@abikenrick8271]

Fab video. Great explanations. Thanks for posting!

[@yamnjam]

I needed this refresher course. It's not an easy subject, but well worth the study.

[@TheMushtyroo]

Thank you so much for taking the time to compile these superb videos!

[@matthewcollis8586]

Very clear way of explaining it all, thank you.

[@ashikpanigrahi]

i think ive not seen a teacher as good as you........thanku

[@geoffreyghunney821]

the best tutorial on logic gates ever from scratch

[@shuoma8403]

Brilliant! Thanks for the clear explanation.

[@dannaibnsaid2221]

love it I understand your English, diagrams and skills. Thank you so much.

[@yaputrajordi2568]

Thank you so much, sir. I'm just a senior high student who loves to play minecraft. But now I understand one or two things about logic gate, thanks to you. At the first time, I watched your video and paused it right after the nor gate explanation. I thought that you would explain the next two gates with transistors too... So I tried to figure the rest of it myself and after 3 or 4 days, it worked. 5 transistors and 2 diodes each. After I watched your video one more time but until the end of it, now I know that I have can do many things with logic gates in minecraft. Thankyou so much, sir.

[@GrigRP]

Do the needful sir

[@RedRobster]

Sincerely; Thanks for taking the time to make these videos.

[@rayfranco1256]

THIS IS THE FINEST EXPLANATION ON THE SUBJECT ANYWHERE

[@boylarga3705]

It refreshes me thank you. And i learned how to do it using transistors

[@ReckStyle]

Sir , You are doing a great job. I will definitely be recommending you!Thank you very much !

[@davidshanlay]

If I found this channel about 20 years or let it be 15 years ago, I would not lost my mind much. Now I miss my mind a lot.

[@DrPhysicsA]

Thanks for kind comments. I'll have a look.

[@tomthumb3085]

Excellently explained. First class teacher, well done.

[@joshpiatt4906]

Thank you so much this helped me a lot, you are really descriptive and you explain everything in detail. Right now I am studying logic gates and this video help me so much. Thank you again!

[@shfqrkhn]

Thank you. Wish I could thumbs-up twice.

[@nogizaka4690]

Shafiqur Khan 2 times thumbs up means a dislike

[@IgorLynn]

you could do that and it will be an XOR operation

[@GioGziro95]

It'd result in a buffer overflow. LOL.

[@rvd2339]

Thank you for a very thorough and clear explaination of this subject.

[@foohines]

Ohhh okay i get it. Thanks so much! And great video! Your teaching style is so clear and understandable. Thanks a lot

[@Space-Industries]

Excellent explanation, thank you. I took an electronics course a year back... Wish I had found this video back then. If I could, I would give this video 5 thumbs up :)

[@dumstzzile]

Thank you, helpful information. Highly appreciate your works

[@absalomakonyo5064]

A great lecture worth several views. Thanks dude!

[@robandkriss6946]

It's been forever since I had to deal with gates. I have a project that I'm working on and I needed a refresher course. THANK YOU VERY MUCH for making this video. You explained it VERY WELL and even showed how to make it with simple components. (which would be my next step on my project) I only need 1 and gate. I'll give you a like and subscribe sir!!

[@liamduncan09]

Brilliant at last a person who speaks British English and can deliver in a clear manner enabling me to understand as I listen more of the same quality please. I feel the need to study more and that is the frame of mind a good teacher should leave a student in as I said Brilliant.

[@ToDie4r]

Mr. you deserve a medal :) Thanks for videos.

[@Caozonsi]

Wow I just lost 47 minutes, I don't know how I was sucked in but it was time well spent. Very well done video. Detailed without being to complicated. Very informative. Thank you very much!

[@alexc2081]

Wow... what an inspiring lecture. So straight forward that I can understand just with seeing!

[@SpencerCornelia]

Thanks x1000 for this great video

[@jawwad4020]

Thank you so much for another AWESOME lesson! :)

[@wodysims3344]

i love this, that shade the light on what i dint know about eletronic.

[@swethadeepak3029]

AN INTRODUCTION TO LOGIC GATES USING TRANSISTORS AND VERIFYING TRUTH TABLE:---- SIR LIKED YR ABOVE VIDEO VERY MUCH. YOU HAVE EXPLAINED SO WELL HOW TRANSISTORS ARE CONNECTED TO ENABLE DIFFERENT GATES. YOUR EXPLANATION IS VERY CLEARLY AUDIBLE AND THE DISPLAY ALSO VERY CLEAR. NO DOUBTS AND ALL CLEAR. YOU ARE A TEACHER OF HIGH CALIBER AND I APPRECIATE YR ABILITIES. THANKING YOU VATSA INDIA

[@TechTiger1007]

Great explanation !!!! I am trying to build a power supply that a can charge a set of batteries as well as run a 7" monitor and a raspberry Pi. This helped me a great deal. Thanks

[@mohdfm]

Best Description Of how logic gates work, being an IGCSE grade X Student, It was really helpful. Thanks You +DrPhysicsA

[@TheOverAndAround]

this is so good! crystal clear!

[@ionciubotaru2696]

I have always wondered how a computer is able to make a calculus and now I know. Thank you very much! :D

[@srivatsaa.r.9936]

sir yr video on AN INTRODUCTION TO LOGIC GATES Is outstanding. yr EXAMPLE OF two circles over lapping each other and finally explaining each logic gate using two transistors is praise worthy. u did full justification to the topic. thanks yours s.vatsa