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Digital Logic Sim

​A minimalistic digital logic simulator · By Sebastian Lague

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244
Topics

Recent updates

Version 2.1.6
24
17
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
6
12
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
244 topics · Next page · Previous page · First page
Topic
Last post
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 99 days ago Last page
82 replies
4,525 views
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 75 days ago
23 replies
3,200 views
This approach actually disables the randomization of the output at start! Let me know what you think @Sebastian Lague!
started by kshlok 29 days ago
3 replies
202 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 56 days ago
7 replies
359 views
for the 7 segment displays, will there be any way to make them negative like how you could in v1? so we could use two's...
started by JJ90848 Apr 15, 2025
11 replies
508 views
I just wanted to inform that it would be easy if you add a chip that can transfer multibit data through one wire and a c...
started by bonico312 35 days ago
63 views
No replies yet
the title is self explanatory
started by DODO 39 days ago
4 replies
195 views
Please bring back the sign from the 7-segment display...
started by erikgobrrr 38 days ago
1 reply
139 views
I’ve tried connecting the input end but nothing changes????
started by Donutman12345 39 days ago
2 replies
130 views
Its slow due to my bad wiring and the fact im using all 32 bit adders instead of 8 bit or 16 bit adders. this can very m...
started by omggitzriley 85 days ago
3 replies
274 views
plz next upd
started by makkk-dev 43 days ago
1 reply
142 views
If you put a zero and one in to a bus it will be choose random of this inputs (Not the 3rd black state for zero). And wi...
started by Murat_two 43 days ago
63 views
No replies yet
I made a RISC CPU that have 16 registers. The first 6 are write only registers (First 4 are for screen and other 2 for b...
started by Murat_two 47 days ago
1 reply
182 views
Hello, I would just like to propose to add a browser version of the sim. I'm not sure how hard that would be, but it wou...
started by Elouan Grimm 63 days ago
7 replies
223 views
I'm trying to build an 8 bit divider but i can't fin any useful scheme online. Can you help me by building one or drawin...
started by DODO 55 days ago
5 replies
194 views
i literally just downloaded this like 40 min ago and i see that in the earlier versions you can get the and and not gate...
started by sofus72 Apr 13, 2025
4 replies
400 views
16-bit inputs, customizable ROM sizes, RGB leds, more keys options (for example Ctrl, Alt, Cmd, Opt, ü, ö, ...), Digit...
started by Murat_two 47 days ago
52 views
No replies yet
Hy everyone, I'm following this project but I'm stuck because I can't get the bus connections without visible wires. In...
started by maxpar 57 days ago
4 replies
138 views
its an alu with 8 settings add,sub,inc,dec,not,and,or,xor and 2 registers for a and b
started by squealinghippo 49 days ago
2 replies
100 views
Does anyone know a good sight or program where u can put in an image, tell it what resolution u want it at, and it will...
started by MrBluewolf65 75 days ago
3 replies
143 views
https://drive.google.com/file/d/11ltvVGB6ma0UTijNF-N0uWPfG0ltJ5fw/view?usp=shari... Hello, I started the update to versi...
started by Cyber974 50 days ago
2 replies
82 views
We love Digital Logic Sim, Sebastian Lague. Can you continue updating it. This situtaion also happened in v1. We don't l...
started by Murat_two 55 days ago
3 replies
150 views