Logic gates - From transistors to logic gates NAND, AND, NOR, OR, NOT, XOR how computers work PART 1

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Logic Gates - This video describes how the main logic gates are built starting from transistors in C-MOS technology, mostly used in CPU and RAM Memory. We see the NAND, AND, OR, NOR, NOT, XOR gates. At the end we see how built a three inputs AND gate and a 3X8 Decoder. This Is the First video of the series: "how computers work".
Read what Andrej Karpathy, the well-known computer scientist who co-founded OpenAI, posted on X (twitter) about my playlist on how CPU works, or read his comment on this video.

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Someone recommended this series on twitter and it went viral. Excellent work 👌🏼

KrAceZ-zr

Andrej recommended it, so I definitely have to watch it.

Sanchit_Bhardwaj-

Andrej karpathy recommended on Twitter. Congrats bro

gearman

Was recommended this on tpot … you know who you are

momentum

andrej got me here, definitely not disappointed

mohitjani

This is incredibly well explained, thank you!

blueguy

Great video! the man from the internet sent me here

PriitKallas

you can master truth tables like this:
AND gate is just a multiplication of the 2 inputs, NAND is an opposite of AND gate’s output, OR gate is the addition of the inputs (adding 1 +1 equals 1 since its in binary) and NOR is also an opposite of OR gates’s output

dhavies

Man oh Man!! Watched only one and this is a banger

hareeshrajendran

who else is here because of Andrej Karapathy 👀

isaakmwangi

there should be option to switch voices now for narrative etc .. transcription is already good

vev

Can't the AND gate be made with 4 transistors? If you change the places of the high and low voltage sources in the NAMD gate. Or if you connect serial n transistors to the high voltage source and the parallel p transistors to the low voltage source.

nihatakdamar

it was recommended by Andrej so I have to watch it...

gileneusz

no one recommended fr was searching for it - wow

Dosomeboutit

As many others, I came here from twitter. I would like to ask a question about a NOT gate. I don't understand why you need two transistors if having a single P-Type transistor, supposedly, already achieves the same effect (outputs 1 when input is 0)?

antonsidorov

@ 4mins, how does the p and n make the NAND if output never gets votage unless 0..? how about 0010

jaredalfredvelasco

Why does a NOT gate require two transistors exactly? Why not just use a p-type transistor? It works exactly as a NOT gate even without a n-type

MadhavanSureshRobos

who else is in ai and just wants to write efficient codes😂

dhavies

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