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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
does anyone have a solution
started by lululeteugdu74 Aug 20, 2025
2 replies
502 views
What is the easiest way to build a Stack and implant it on CPU? Diagram?
started by Bendy509 Aug 20, 2025
2 replies
474 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 Jul 21, 2025
5 replies
871 views
i just need the simplest, most idiot-proof method to making a simple binary counter
started by Rando2048 Jun 21, 2025
4 replies
1,059 views
I've been following the digital logic playlist Sebastian has on his yt and he's using a 7-segment display with a - sign...
started by MarsDarklighter Aug 21, 2025
1 reply
356 views
having a empty bus causes the whole simulation to stop working including the clock until i delete the bus (including the...
started by MartenV Aug 21, 2025
85 views
No replies yet
I made this prototype Snake game with this logic simulation, Currently you can move throughout the screen via WASD with...
started by BaconLogic Apr 22, 2025
14 replies
1,402 views
can you do that?
started by ORYX Apr 12, 2025
5 replies
1,476 views
Idk how to use it
started by ZaxinothDigital May 10, 2025
8 replies
1,599 views
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 Jul 01, 2025
11 replies
936 views
INST Bin Function NOP 0000 No operation LDA 0001 Load accumulator from memory ADD 0010 Add memory to accumulator SUB...
started by Bendy509 Jul 12, 2025
9 replies
760 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...
362 views
No replies yet
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 Jun 13, 2025
13 replies
1,134 views
I need to know how to make a register
started by Sterminator1211 Jul 21, 2025
2 replies
464 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...
182 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 Jul 19, 2025
2 replies
442 views
Please excuse my sloppy wiring. I have highlighted in Violet here the offending signal, which flickers in only some inst...
started by gardrek Apr 19, 2025
11 replies
1,289 views
it works by feed its input into it self but when the and is active it switches to the data buffer.
2 replies
416 views
12 and 16 bit stuff. please.
started by sussybuku Jun 12, 2025
4 replies
526 views