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With LogicSim you can design and simulate digital logic circuits with logic gates like AND, OR, FlipFlop, etc.
The following types of logic gates are included:
You can create your own gates by saving a circuit as a "module" and reuse this module in another circuit.
- Basic: AND, NAND, OR, NOR, XOR (Antivalence), Equivalence, NOT
- Flip Flops: RS, D, T, JK, JKMS
- Timers: clock generator, MonoFlop, Turn on delay, Turn off delay
- Inputs: Switch, number-input for decimal and hexadecimal values
- Outputs: LED, LCD for decimal and hexadecimal values
Polish translation by Wieslaw Soltes
- 2009-01-09, Version 2.4
Changes by Dieter Meier:
- stop simulation when new file is opened
- reset stopped simulation
- D FlipFlop with reset
- circuits BCD Adder and BCD Counte, modules segm1-7
updated D-FlipFlop, Swedish translation and documentation
changed images for DFF, JKMSFF, JKCFF
added Dutch translation, by Ben Harkema
fixed some layout problems on OS X
LogicSim can now run as applet in browser
Added reset button
New component: 7-segment display
Added French localization and manual, created by Thierry Valette
Added Italian localization and manual, created by Prof. Riccardo Bianchi
- 2006-01-02, Version 2.1
Internationalization support, german localization
ISO gate symbols, created by Prof. Riccardo Bianchi
Properties item in gate context menu is now disabled when gate has no properties
The Switch element can now be configured to be a traditional toggle button or a click button, which ist only on as long as the mouse button is held down.
Added support for text labels anywhere in the circuit.
Place the text label object and edit the text with context menu -> properties.
Use \ (Backslash) to insert a line break.
- 2001, Version 2.0
JAVA-Version of LogicSim
added support for "modules", you can save a circuit as module and reuse it in another circuit
- 1995-1996, Version 1.0
Initial Version for Amiga, written in "PCQ-Pascal". LogicSim for Amiga
To start LogicSim, extract the archive content and double click on LogicSim.jar
or run "java -jar LogicSim.jar".
download LogicSim source
This program is free software released under the GNU General Public License.
English LogicSim Manual
Deutsche LogicSim Anleitung
To run this program you need at least version 1.4 of the JAVA Runtime Environment.
download the latest Java Runtime Environment (JRE)
See LogicSim in action: LogicSim Applet
Simulation of a 5 Bit Adder with decimal input/output.
The Full Adder module used in the top circuit.