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File: 1754926550763100.png (53 KB, 1042x745)
53 KB PNG
Love this lil nigga like you wouldn't believe, he makes things appear on my 'puter including this shitpost, for which I'm forever grateful
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is that an and gate?
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>>109161305
yeah anon, isn't it cute? it allows you to see my shitpost
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>>109161330
how would you turn it into a nand? I heard those are more used
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File: 1763902698229602.jpg (7 KB, 256x256)
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>>109159446
uhm that's neither a nand nor a xor
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>>109161514
I love them all, hey look it just made an anime picture appear on my screen, shit's magical I swear
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>>109161351
remove R2 and place output before transistors. When A and B are on it gets shorted to ground
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>>109159446
Your computer hasn't used BJTs for a long long time.
Also, the thing that makes stuff appear on your screen is usually a DAC (it's not always the same thing, depends on the screen, this is mostly true for generic LCDs), not a logic gate.
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use case for TTL in 2026?
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>>109161351
In modern cmos implementation, nand is easier, because you put complementary signals and it inherently inverts.
But if you use BJTs in emitter output setup like in the picture, implementing AND can be easier.

There's no logic realization reason to prefer nand gates over others, meaning if you simplify a logic function and ignore the real physical implementation, it is not necessarily beneficial to state it in terms of nand functions.
In modern cmos they're preferred because implementing nand is easy, can be made faster than nor and nand + not allows you to implement everything.
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>>109161647
Almost no use case but some niche applications can still benefit from them.
In some industrial applications they can be good buffers with some logic and 74 series aren't that bad in terms of noise. They're just discrete and power hungry.
In integrated circuits, sometimes experimental stuff or instrumentation stuff need logic implemented with BJT. Usually people do CMOS CML but sometimes BJTs are used still.
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File: 4256234543256432.jpg (125 KB, 1600x1067)
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>>109161647
simplicity
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>>109159446
>two diode drops
eh, who needs regeneration
i didn't need to chain together logic gates anyway
>bjt saturation
and i didn't need the speed either
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>>109161647
that's RTL
it, DTL, and TTL are useful for glue logic
TTL is useful for more complicated discrete circuits too
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>>109159446
Why can't you do this with 1 transistor with A and B wired together?
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>>109162255
If A and B are both actively driven, meaning they're driven by strong drivers, and if A is high, B is low, then you're driving current from A into B to do nothing.

However, what you're suggesting is sometimes done while employing diodes to prevent useless power waste. Basically that's how diode logic works. No longer common for regular logic but sometimes used in custom logic (power sequencers come to mind as first example).
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File: nandnor.gif (5 KB, 463x283)
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>>109161330
If you use bipolar trannies you lost control of your life.
Use CMOS or gtfo, bitch.
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>>109162484
seek help
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>>109159446
Do modern computers use Bipolar junction transistors?
werent those replaced by MOSFETs?
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>>109162883
>loves bipolar trannies
>tells me to seek help
haha
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>>109162484
this or you ngmi
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>>109162902
>Do modern computers use Bipolar junction transistors?
Not for anything digital; they've too much leakage current.



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