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Logisim-evolution

You build and simulate digital circuits with logical ports, memory elements and other components.

Developer Logisim-evolution

Version 5.0.0 · Open source · Windows · macOS · Linux

Logisim-evolution is an educational environment for digital electronics. You connect components and see how signals pass through a circuit. For example, you can explore combinatorial logic, counters or simple components.

The simulation is about digital logic and is not a complete imitation of any electrical effect in real hardware. Work in small modules and check input conditions before building a large circuit. Makes mistakes better to find.

Who is it for?

You learn digital technology and want to build and test circuits on the screen.

Getting started

Choose the official package for your system. Use the Java version that prescribes the release in a single JAR.

Privacy

Your circuits can be locally created and stored. No mandatory online simulator is required.

Good to know

The focus is on digital logic; analog effects and all physical hardware constraints are not fully simulated.

Please note

A logical simulation does not prove that a physical circuit is constructed electrically correctly or safely.

Advantages

  • Visual digital circuits Investigate direct signals Suitable for education and modules

Things to consider

  • No full analog simulation Large schematics become complex Check Java or Package Requirements

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Official download page

Provider’s website · github.com

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Version history

5.0.0

You will find actions faster and can merge or export circuits more precisely. Check existing RAM circuits before building.

  • With Ctrl+Shift+A or twice Shift you search for menu actions and components.
  • You can place images in circuits and open projects via drag. There are new components for, among others, clock signals and floating point constants.
  • When merging and exporting you choose separate circuits and their dependencies. Conflicts can be solved in a targeted way.
  • RAM only writes when the corresponding line-enable input is active. Older projects with an unconnected input may therefore need an explicit connection.
4.1.0

You can easily find operations and perform successive tests more extensively.

Logisim evolution 4.1.0 adds a history for undoing and re-run with up to 64 steps. Sequential test vectors have been expanded. In addition, the TTL 74245 connections and parts of SVG and TikZ exports have been corrected.
Report a new version

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Our verdict

Logisim evolution is a good tool to make digital logic concrete. You can convert a truth table into a circuit and immediately see what different inputs do. That helps understanding ports and combinations of them.

The power is in small, verifiable steps. First build a part that you understand and then use it in a larger schematic. This way you prevent a mistake from disappearing somewhere in an unclear whole. For real electronics, tensions, timing and component selection remain additional topics. Use the simulation to learn and control logic, not as only evidence for a physical execution.

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