simulator.io - Build and simulate logic circuits

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Build and simulate logic circuits.

Web-based logic circuit simulator for people who want to build a computer from scratch.
- Build
  
  Design logic circuits online
- Simulate
  
  Test your logic circuit in real-time
- Collaborate
  
  Work with a team on a single synchronized circuit
simulator.io is an online CAD tool for logic circuits. Easiest way to learn how to build logic circuits.

Easy To Use

Place

Select an element. Place it on the board.

Connect

Use the Wire Tool to connect your elements.

Test your circuit

Click RUN to start the simulation.

Share and collaborate

Collaborate with your team in real-time or share a snapshot of your work.

Check out our sample circuits

Design everything on logic level
from a simple light switch to a complex CPU.

Join the community

Or create an anonymous board.

It's free.
- Login
- Register
- Workspace
- RUN
- RESET
- Link
- Fork
- Team
- Chat
Elements
Options
No options available for this tool/element

Direction

Color

Action

Delete

Input count

Size

Input count

Input count

Text size

Display Type
Simulation

Sync Frame/Ticks
Clock
No clock placed

Generate

Stop

Ticks (n)

Error

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Message:

Error

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Login

Forgot your password?

Register

Please read the terms of use first.

Share and work with collaborators

Only the board owner can change the team member settings.

User	Type	Permissions

Permalink to snapshot

You can share a snapshot of the current board which is represented by a unique URL.

Snapshots are editable, but can only get saved as new snapshot or as fork.

Share this link:

Everyone with the permalink to the snapshot can access it.

Board name

Enter a name for the board:

Fork

You can create a copy of this board in your workspace. You will be the owner of the board and can set up your own team of collaborators.

Changes in the new board will not affect the forked one.

Error

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Message:

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