KLogic is an application for building and simulating digital circuits easily.

It provides an easy way for building circuits containing standard components like AND, OR, XOR and flipflops like RS and JK. In order to build more complex, more structured and reuseable circuits, sub circuits can be used.

The simulation is running permanently per default while building your circuits.
Single stepping simulation makes it possible to analyze peaks in circuits. Karnaugh graphical analysis method and others are available for simplifying purposes.
Signal flow of components can be displayed as a graph.
Each device of a circuit has a tuneable delay.
With special devices like RAM, tristate and bus it is possible to create computer related circuits easily.