Switches to CPUs: Relay based logic
ฝัง
- เผยแพร่เมื่อ 16 เม.ย. 2024
- We look at implementing our 2-input gates with relays.
Part 1: Binary numbers - • Digital Logic Explained
Part 2: 2-input gates - • Switches to CPUs: 2 In...
Part 3: Relay based logic - • Switches to CPUs: Rela...
Part 4: Latches - • Switches to CPUs: Rela...
Part 5: SR Latch - • Switches to CPUs: Set ...
Part 6: Wired OR gates - • Switches to CPUs: Wire...
Part 7: Flip Flops - • Switches to CPUs: Flip...
No errors in this video that I could see. Good job!
It's not surprising that you can make general-purpose computers with relays. They perform basically the same function as transistors; it's just that relays have power characteristics that make them unsuited/inefficient for more complicated computers.
Thank you! Your explanation of common gates are easier to learn than electronic texts books I have had in college. Awesome! I am remembering things I have long put deep in long term storage of my mind.
Glad it was helpful!
I loved building relay logic gates when I was younger. (I love the noise they make)
Yeah, there is something majestic about them
I made a simple relay computer in my teens, 2 bit ALU. Clicky fun !
Cool! I look forward to your thoughts and feedback as I go along!
I just bought 100 relay even before seeing this video. cant wait to see a fully working CPU out of that. Your video are really good so keep going
Excellent. Enjoy!
Tandy was the UK subsidiary of Radio Shack, as well.
Very informative.
Glad it was helpful!
7:47 I had that exact same one!
So very retro, thank you.
You bet! Thanks for the feedback.
I had a similar electronics project kit, no LED 7 segment display at that time.
I still have 160 in One
I had the same Radio Shack project kit when I was a kid and loved it. Unfortunately at the time I didn't know electronics theory to get more out of it. It disappeared after a move, which is a shame because it would be neat to look at the projects with a better understanding. The same is true for my chemistry set. On topic, relay computers are neat, and if Lost in Space taught me anything, it's that they're the secret sauce to building robot assistants.
Yeah, i loved mine.
This isn't my original one, not sure what happened to that.
I got this one from Canada off Ebay to use in this video series.
I've decided to stick with the relays longer than i had
originally planned. Might even see if i can get all the
way out to a Relay6502.
@DrMattRegan A relay 6502 would be beyond awesome. Also, in a 6502 forum discussion one poster said that flyback diodes decrease arcing and increase reliability. But decrease the maximum clock rate.
@@mheermance correct 👍. The counter at the start of the video has fly back diodes. I’ll introduce them a bit later, I’m trying to drip feed the knowledge. Eventually I’ll turn that binary counter into the sequencer.
Joseph Henry invented the relay in 1835 just over a century before Konrad Zuse designed his computer.
By comparison thermionic valves were around for less than forty years before Tommy Flowers built Colossus.
Cool, thanks for that. I know there is a bit of controversy over whether the Z3 was Turing complete. I've read Rojas' argument but i have a slight problem with it, so i'm close to yes, but not quite there yet.
спасибо, хорошая работа.
Thanks for the feedback!
i know it is not a place for such question and that this topic was probably beaten to deth by now
but would making multiprocessor 6502 have any benefits over single "core" system?
i been wondering about it because i recently found a pack of nes clone cpus and ppu's, some 2kb sram chips an logic chips, i couls technically build about 5 nes clone systems from it but after watching some of yours videos about sinclair and other micro computer archiectures i was really curious about moving some things around on the schematics to make something wierd and the only idea i keep falling back to is how would you ever multithread an 8 bit system
Back in the day, I worked on the crossbar and level 2 cache at NVidia Fermi, which is how the cores talk to each other. I concluded that multi core is the trick you use when every other trick has run out of gas.
Hi thanks for your videos, all content is very interesting and I want to continue learn more in detail how works a computer, I hope soon the next video
Thanks for the feedback, enjoy!
I like that each of these is really short and digestable :) haveing a good time watching them
Thanks for the feedback David.