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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
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
4,516 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 74 days ago
23 replies
3,190 views
so i was playing with and auto cliker but when i touch a wire in the simulation, it made a bunch of tiny wires that turn...
6 views
No replies yet
My own CPU named "N-16" is finished, due to DLS engine it might fail fibonacci sequence but sometimes it works if there...
started by mukhash_x86 24 days ago
7 replies
257 views
INST Bin Function NOP 0000 No operation LDA 0001 Load accumulator from memory ADD 0010 Add memory to accumulator SUB...
started by Bendy509 13 days ago
3 replies
132 views
I just noticed it would be nice to have a random number generator. I know I could just use a clock, a binary counter and...
started by virtual_matt 4 days ago
3 replies
53 views
can you do that?
started by ORYX Apr 12, 2025
4 replies
267 views
Sebastian hasn't updated Digital Logic Sim for a long time. So it's up to us, the community, to do mods. And I want you...
started by Murat_two 42 days ago
13 replies
411 views
I need to know how to make a register
started by Sterminator1211 4 days ago
2 replies
57 views
I Have 16-bit address ram storing 16-bits, it runs at 1800 operations per second, its made using rgb screens, i got the...
33 views
No replies yet
I do not have the best computer. When trying to build a 16-bit RAM, my PC started running hot at 12 bits with DFF-RAM bu...
started by nomasan 6 days ago
2 replies
83 views
Idk how to use it
started by ZaxinothDigital 76 days ago
6 replies
361 views
Please excuse my sloppy wiring. I have highlighted in Violet here the offending signal, which flickers in only some inst...
started by gardrek 97 days ago
11 replies
459 views
it works by feed its input into it self but when the and is active it switches to the data buffer.
2 replies
111 views
i just need the simplest, most idiot-proof method to making a simple binary counter
started by Rando2048 34 days ago
2 replies
216 views
12 and 16 bit stuff. please.
started by sussybuku 43 days ago
4 replies
212 views
how i do make a simple CPU?
started by scratch_turbo 49 days ago
3 replies
190 views
I recently changed to version 2, because I realized that its better, but I have lots of libraries I need to re-create, i...
started by Ereinis1234 19 days ago
1 reply
143 views
I keep seeing the inputs for chips at the bottom/underneath the chip, but for the life of me I cannot figure out how to...
started by welss 19 days ago
3 replies
204 views
THIS IS THE STARTER PACK FOR DIGITAL LOGIC SIMULATOR. If you do not feel like following and copying Sebastian's every mo...
started by kshlok 35 days ago
3 replies
388 views
hi im making a unofficial discord server for this game: https://discord.gg/bPVG8MkMt9 we have over 100 people in it righ...
started by adamindibiemiravci Apr 14, 2025
18 replies
864 views
The other larger unofficial DLS server is a bit disorganised and also diverges quite a bit from a proper community serve...
started by doytschReal 30 days ago
1 reply
185 views