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29 nov, 2016 @ 15:10
29 nov, 2016 @ 16:34
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Sum together three one-bit binary inputs using only logic gates.
19 kommentarer
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shigawire 30 aug, 2022 @ 7:13 
@ココアお姉ちゃん You can solve in 4 yuan without using the extra NOT gate but it takes very strange wiring
Cocoa 27 aug, 2022 @ 18:01 
I don't know how to solve in 4 yuan. The AND gate in the last row can only output the NAND value, isn't it? So I have to use an extra NOT gate to get the AND value.
shigawire 23 sep, 2021 @ 6:58 
Solved for 4 yuan, and then for 15/739/24 with 5 microcontrollers. Fun!
pamdemonia 12 dec, 2016 @ 23:41 
Wonderful puzzle! So cool to actually trot out a notebook and figure out some truth tables!
alexanderpas 6 dec, 2016 @ 18:44 
Can be solved using 5 microcontrollers

http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=813712627
http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=813712695
La Vaca Saturno Saturnita 2 dec, 2016 @ 20:57 
And pv2b, yeah it's impossible on a single PGA33X6. The minimum number of terms you can simplify the equation to is 7 total, which is just one too many.
La Vaca Saturno Saturnita 2 dec, 2016 @ 20:27 
Wow, I finally did it. 4 yuan solution is disgusting.
Daedamid 1 dec, 2016 @ 20:03 
After spending 2-3 hours just trying to get this flipping thing to work, I finally got it. It was a very clean solution for 5 yuan. Then 15mins later I got the 4 yuan one which is a hideous mess.
pv2b 1 dec, 2016 @ 16:22 
Way to think outside the box, ShadowTheAge! :-) I had the idea of seeing if I could sneak a microcontroller in there, but I incorrectly concluded it was impossible due to the pinout.
ShadowTheAge 1 dec, 2016 @ 15:04 
Logic-only puzzle? NOPE :D https://imgur.com/a/QKgqv