DrPhysicsA
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. .
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31 thoughts on “An Introduction to Logic Gates”
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Without the +ve switch acting on that, how the npn behaves? Does it act like A normal battery with +ve and – ve ends?
Anyone know at what time it talks about photolithography?
thanks for sharing DrPhysicsA
196230316549 neel patel
I understand now. Thank you very much!
This is my favourite subject. Brilliantly explained and demonstrated. Great video, thanks.
Pip pip m8
Nice video on the topic.
The playground analogy seemed confusing and unnecessary ..(also not PC these days in 2020)..even so..thanks for the explanation
So Far so good. But I must admit relay logic is what got me going. Results with less theory.
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.
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.
YOU SR THE BEST!!
E X E M P L A R YOU IS.
GREAT THNAKSFULL!!
viva UK!
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.
simply brilliant!!!
Very well done, thank you!
Nice. This was a great refresher for me. Also for that last one, the xnor, you could have just switched that last nand for an and since it is just taking an inverter of instead of double inverting.
Actually it's interesting the way you can mix different gates to get the same results. Like how you can split your inputs into an (or) and a (nand) then put those outputs into an (and) and get an (xor). Which I guess is why some microchips are more efficient at the same thing over others.
Fab video. Great explanations. Thanks for posting!
9:02 No not both… sorry Xnor
Excuse me and my english…but I don't understand…About at minute 35: if the output is the voltage measured where you showed then when the transistors are open no current flows trough the resistor so no voltage drop and the voltage is exactly 5 volt…Are you considering another circuit that I don't see? I don't understand…
Can you say that again, please?
Very clear, precise, accurate and enjoyable demonstration. Thank you very much.
Like if u watching this in 2021 to solve the Boolean equation in yer brain to activate the logic gates in yer own gray matter, so yer negative inputs render Positive Outputs, so instead of passive YouTube learning you can turn on your transistor and convert yer zero-volt potential energy into useful kinetic energy so you actually get up and CLEAN YOUR DANG ROOM… in 2021.
It is a very good class..
great video to make a hard subject seem simple
This is hands-down the best explanation of this I've found. Thank you!
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.
Best video for logic gate🥰🥰🥰🥰🥰🥰
What an amazing video. Thank you so much.
idk how many videos I have watched about logic gates but this one is the best thank you a lot sir
Thank you for this video.