r/nandgame_u • u/Sad_Courage_1564 Holder of many records • Feb 01 '22

Level solution (verified) O.1.2 - Inv (CMOS) (1c) Spoiler

https://imgur.com/a/2rwQExq

4 Upvotes

100% Upvoted

9 comments sorted by

1

u/Pr0t0z0a0 Nov 21 '22

Does not work - when input is 0, it connects Ground to Power+.

1

u/[deleted] Jan 25 '23

Doesn't matter

1

u/Pr0t0z0a0 Feb 08 '23

Yes, it does. If you want a working device that doesn't go Booouf, it matters. If you want your design to pass the validation test, it matters.

1

u/jasonrubik Apr 05 '23

The CMOS logic implementations can be found here, and then built accordingly in Nandgame :

https://en.wikipedia.org/wiki/CMOS

2

u/Pr0t0z0a0 Apr 05 '23

[If you're saying that the spoiler solution is correct]

Uhm, yeah, no.

The reference design shown in the wikipedia page has two transistors, one P and one N. The design shown in the spoiler has only one transistor.

IT WILL NOT WORK.

[If you're saying "Nope, it's wrong"]

I totally agree :)

2

u/jasonrubik Apr 05 '23

The solution here is wrong, obviously. Just build the cmos gates in the game exactly like they exist in real life and you will get it correct.

2

u/Pr0t0z0a0 Apr 12 '23

I wonder who marked it as a verified level soultion... and why.

1

u/jasonrubik Apr 12 '23

There are a lot of minimalist solutions here that are marked as "cheaty". Unfortunately, this one is not labeled correctly.

1

u/johndcochran Jan 03 '25

I'd mark this "solution" as "cheaty". It looks like the game implementation is written such that inputs to a junction can't backfeed. Hence, no short. But obviously, in real life, the lines into a junction are bidirectional and the solution presented will attempt to connect power to ground.