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Digital Logic Sim

​A minimalistic digital logic simulator · By Sebastian Lague

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305
Topics

Recent updates

Version 2.1.6
27
24
Change Log: Added a Buzzer chip for creating sounds. This has a 4-bit volume input, and an 8-bit frequency input. The frequency range is from 27.5 to 3729.3 Hz...
3 files
Version 2.1.5
8
14
Change Log: Small improvements to simulation performance Minor reduction in simulation memory usage LED colour can now be changed from context menu (right-click...
3 files
Version 2.1.4
14
Change Log: Added keyboard shortcut to pause/unpause the simulation with Ctrl + Space Advancing a single step while paused is now down with the Space key Added...
3 files
Version 2.1.3
8
16
Change Log: Added an Undo/Redo system (ctrl+z, ctrl+shift+z) Note: this does not affect menu actions (such as creating collections, starring chips, etc). Added...
3 files
Version 2.1.2
5
16
Change Log: Added hex colour input field to chip customization menu Fixed chip 'save as' incorrectly overwriting uses of the original chip Fixed bug where you c...
3 files
Version 2.1.1
7
8
Change Log: Duplicating chips (with shift+D) now includes the connected wires Fixed thread conflict that could sometimes cause simulation to stop working when e...
3 files
Version 2.1.0
1
12
Note: I've set the version to 2.1.0 because this update contains bug fixes relating to the core simulation. It's therefore possible for the behaviour of some ch...
3 files
Version 2.0.4
7
13
Change Log: Improved wire editing controls (insert/delete wire points, and show grid while snapping) Fixed bug where collection name input field couldn't be bla...
3 files
305 topics · Next page
Topic
Last post
A few frequently asked questions I've seen (will add more later). Last updated for version 2.1.6 Where are the AND and N...
started by Sebastian Lague May 12, 2025 Last page
42 replies
18,280 views
Hi everyone, I was thinking it might be fun to have a playlist on youtube to showcase different things that people have...
started by Sebastian Lague Apr 17, 2025 Last page
100 replies
10,814 views
https://drive.google.com/file/d/1ustxCckOE524SGe9H4pOA1dIAew0fxIc/view?usp=shari...
started by Bendy509 4 days ago
47 views
No replies yet
its really annoying to keep copy and pasting like 16 roms
started by 421Dungeon Jun 20, 2026
9 replies
328 views
I really want those
started by SebastianCat 39 days ago
2 replies
211 views
Please make V2 saves compatible with V3 saves (when V3 comes out(if it will))
started by timurlis0702 13 days ago
41 views
No replies yet
im kinda having trouble using this Display, anybody give me some tips? I'm trying to try and make some art on this but i...
started by 0Smiley0_ 13 days ago
50 views
No replies yet
The "ZHT80" is my project computer I've been building as I follow along Sebastian's and Ben's video series. So far it is...
started by Zhatt Apr 29, 2025
7 replies
1,309 views
Seeing many people attempting to build a processor “from the inside out” (i.e., mindlessly connecting individual log...
started by NeevorPL May 16, 2026
5 replies
1,110 views
started by Bendy509 Apr 16, 2026
13 replies
760 views
i am getting 70 steps per second my whole project is slow i only have 256 bytes of memory with a couple of 1 bytes here...
started by goADX May 30, 2025
8 replies
812 views
When I click like 4 times on chip i place them in group. How can i space them apart?
started by KoalasTheBest Apr 14, 2025
2 replies
314 views
when i deleted all of my projects, i couldn't make a new project for sum reason, i tried to delete the game files and re...
started by WindioSM64 86 days ago
1 reply
209 views
Hello, are you aware of the IOS and Android ports of digital logic sim. called digitallogicsimmobile on IOS.
started by OliveLlama 90 days ago
199 views
No replies yet
I am on Mac (M1, sonoma), and for whatever reason, when I downloaded the appropriate version, it simply says "Can't be o...
started by jonathanjoejose 92 days ago
1 reply
208 views
16-bit inputs
started by Z4597 May 02, 2025
18 replies
987 views
I am wondering if the game will be updated on Itch with version 2.1.6.14 (Play Store version) since the Itch version is...
started by CryptoCotton Jun 18, 2026
188 views
No replies yet
Im trying to figure this the whole time out. I asked AI and stuff but it didn't help me at all I just want to run my own...
started by MelonVR Apr 03, 2026
12 replies
958 views
I made this cool app so please check it out
started by Z4597 Jan 26, 2026
3 replies
597 views
By “constant” pins I mean the same as the IN pin, except it keeps the same value when you save the chip, and it does...
started by Fastpast93 Jun 05, 2026
139 views
No replies yet
made in a mobile port i use
started by Levince May 31, 2026
246 views
No replies yet
I am trying to create a momentary switch for various purposes, and I feel like this is something that should be doable...
started by Justaguywhodoesstuff Apr 02, 2026
2 replies
207 views