Digital Logic Sim

About:

A minimalistic digital logic simulator. You're given a NAND gate to start with, and from there you're free to build up your own custom chips in layers of increasing complexity. There's no particular goal to the game, but you could try to make a chip that adds numbers together, or one capable of remembering data -- or perhaps even challenge yourself to design a simple computer!

This is version 2 of the simulator, and it's in a pretty early state, so please expect bugs and performance problems, wonky UI, and all that fun stuff. Feedback and suggestions are very welcome here or on the project's GitHub page. Please note that this version is not compatible with projects created in v1 or v0.

Latest build: v2.0.3 (12 April 2025)

Controls:

• Camera
  • Scroll wheel or Alt + Right Mouse Drag to zoom
  • Middle Mouse Drag or Alt + Left Mouse Drag to pan
• General
  • Ctrl + G to toggle grid
  • Right Click for context menu (on chips, wires, and pins)
  • Left Mouse Drag to box-select
• Chip
  • Hold Ctrl to snap to grid (while placing)
  • Hold Shift to place multiple copies (while placing)
  • Hold Shift to constrain movement to a straight line (while moving)
  • Shift + D to duplicate selected chips