Logisim is an educational tool for designing and simulating digital logic circuits. With its simple toolbar interface and simulation of circuits as they are built, it is simple enough to facilitate learning the most basic concepts related to logic circuits. With the capacity to build larger circuits from smaller subcircuits, and to draw bundles of wires with a single mouse drag, Logisim can be used (and is used) to design and simulate entire CPUs for educational purposes.
Logisim is used by students at colleges and universities around the world, for a brief unit on logic in general-education computer science surveys, for many computer organization courses, and in full-semester courses on computer architecture.
Units in the Logisim help system include:
Beginner's Tutorial
User's Guide
Tool Reference
About This Program