jCircuits Icon


An easy-to-use Simulation of Hardware-Gates

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Download jCircuits_1.6.jar
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A very easy-to-use but complex Gate-Simulation.You can simulate various gatters like AND, NAND, OR, NOR, NOT, XOR. And also build Flip-Flops, Full Adders and other compley structures. In other words its a register-Transfer Simulation of Hardware-Processes.

There are also 2 Applet-Versions - the full Version and a only-Display-Version

---------- USEFUL TIPS: ----------

Always enter the Edit-Mode (swiss knife) bevor editing something ;) [!! IMPORTANT !!]

Try out the examples ("Components"-Tab -> Choose a Circuit -> Add Button)

Leave the Edit-Mode to control interactive elements

Press >>Alt<< to draw a Selection-Box

Press >>Shift<< to complement your Selection

jCircuits Web Site


  • Gate Simulation
  • FlipFlops
  • works on nearly all Operating systems
  • Register-Transfer-Simulation
  • neat GUI
  • free and Open-Source
  • very performant
  • full-functional Applet-Version
  • a Only-Display-Applet-Version (no need of signing the Applet)
  • BUS-System
  • OpenGL and Canvas Rendering
  • Compatible with the Cir-Fileformat (http://gkinf.de)
  • Load and Save the Grid
  • Dragging and Zooming
  • Over 50 different Elements


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Additional Project Details



User Interface

Java Swing

Programming Language




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