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Making RAM at Home [video]

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Re: Making RAM at Home [video]

#31
So, I get that we charge the capacitor up, and that it leaks so we must recharge it periodically. I don't get two things:

1. How is the value read? Is it reading the leak?

2. How is recharging done? I guess the leak itself (assuming my guess in 1. holds) could provide charge for some logic that checks "if has charge then recharge else nop".

I still don't really get transistors :P, but this was cool.

Re: Making RAM at Home [video]

#35

So, I get that we charge the capacitor up, and that it leaks so we must recharge it periodically. I don't get two things: 1. How is the value read? Is it reading the leak? 2. How is recharging done? I guess the leak itself (assuming my guess in 1. holds) could provide charge for some logic that checks "if has charge then recharge else nop". I still don't really get transistors :P, but this was cool.

https://en.wikipedia.org/wiki/Dynamic_random-access_memory#P...

It turns out they intentionally drain a bit of the storage capacitor, and amplify that weak signal. Some of that amplified charge is then fed back to storage.

Re: Making RAM at Home [video]

#37

Earlier quoted context omitted.

You’re not sure if someone building a RAM clean room in a shed is appropriate for HackerNews, literally “news for nerds”? A dictionary purchase may be warranted

Yeah but it's a YouTube video. Those tend not to do super well on the front page.

Just gimme the transcripts for a speed read

Re: Making RAM at Home [video]

#40

So, I get that we charge the capacitor up, and that it leaks so we must recharge it periodically. I don't get two things: 1. How is the value read? Is it reading the leak? 2. How is recharging done? I guess the leak itself (assuming my guess in 1. holds) could provide charge for some logic that checks "if has charge then recharge else nop". I still don't really get transistors :P, but this was cool.

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