# hneemann/Digital

A digital logic designer and circuit simulator.

Repository: https://github.com/hneemann/Digital
Canonical: https://ross.abutalabs.com/products/digital
Language: Java
License: GPL-3.0
License Family: copyleft
Topics: circuit, digital-circuits, logisim, simulator, logic-gates, education, logic
Last push: 2026-06-12T17:09:11+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 87, release rhythm 8, longevity 100
- inputs: {"age_days": 3718, "days_push": 82, "days_rel": 729, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5945, forks 588 (observed 2026-08-28T04:09:32.624102+00:00)

## What it is
Digital is a digital logic designer and circuit simulator built in Java, aimed primarily at education. It supports interactive signal visualization, circuit analysis and synthesis, test cases, FSM editing, and VHDL/Verilog integration.

## Use cases
- simulate digital logic circuits
- design logic gate circuits for a class
- build and test a simple CPU in a simulator
- convert a finite state machine to a circuit
- export a circuit to VHDL or Verilog
- learn how flip-flops and combinational circuits work
- logisim alternative for teaching digital design

## When to choose
- teaching or learning digital logic design
- simulating circuits with visual signal-state feedback
- needing VHDL/Verilog component support or export
- running test cases against circuit designs

## When to avoid
- analog or mixed-signal circuit simulation
- PCB layout or physical hardware design
- production EDA workflows requiring industry-standard tools

## Facets
- artifact type: application
- maturity: active
- function: simulation, gui, graphics
- domain: education, simulation, hardware, developer-tools
- platform: cross-platform, jvm, windows
- tags: digital-logic, circuit-simulator, logic-gates, vhdl, verilog, fsm, logisim-alternative, education, desktop, linux, macos

## Member repositories
- hneemann/Digital (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:32.624102+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:50:44.514901+00:00, confidence not recorded.
  - readme: https://github.com/hneemann/Digital (fetched 2026-08-28T04:09:32.624102+00:00, sha 736eb7ed4e9c)
- Data as of 2026-08-30T08:39:29.467469+00:00.