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Digital Logic Sim

​A minimalistic digital logic simulator · By Sebastian Lague

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255
Topics

Recent updates

Version 2.1.6
26
18
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
255 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 Apr 17, 2025 Last page
84 replies
5,577 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 May 12, 2025
25 replies
4,929 views
Please bring back the sign from the 7-segment display...
started by erikgobrrr 83 days ago
1 reply
155 views
I’ve tried connecting the input end but nothing changes????
started by Donutman12345 84 days ago
2 replies
140 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 May 01, 2025
3 replies
296 views
plz next upd
started by makkk-dev 88 days ago
1 reply
151 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 89 days ago
77 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 92 days ago
1 reply
198 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 May 24, 2025
7 replies
247 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 Jun 01, 2025
5 replies
212 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 92 days ago
62 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 May 29, 2025
4 replies
146 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 94 days ago
2 replies
120 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 May 12, 2025
3 replies
153 views
https://drive.google.com/file/d/11ltvVGB6ma0UTijNF-N0uWPfG0ltJ5fw/view?usp=shari... Hello, I started the update to versi...
started by Cyber974 95 days ago
2 replies
88 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 Jun 01, 2025
3 replies
164 views
i have photo to explain THE FIRST PICTURE IS D-LACTH IT DOSENOT USES SR-LACTH BECAUSE SR LACHT KEEPS RANDOMISING AND THE...
started by bonico312 98 days ago
90 views
No replies yet
Does anybody have a dot or rgb display program? If so, can you 1. go to terminal 2. navigate to for windows: C:\Users\[U...
started by kshlok Jun 01, 2025
1 reply
104 views
Hi i'm trying to use the dot display but i don't know how use it. Can anyone help me please? excusme for the language bu...
started by leo.zorro.11 Apr 16, 2025
5 replies
454 views
Hey guys! So I've just gotten into this and I'm playing around with the RGB Display, but I get this weird banding patter...
started by Hahoolah May 31, 2025
8 replies
188 views
this game is addicting i am playing it 24/7 making computers is hard
started by goADX May 29, 2025
1 reply
107 views
I have been working on this one for a while now, but I have managed to get fully-featured pong running on my 8-bit compu...
started by Zhatt May 26, 2025
1 reply
378 views