This application allows you to create logic circuits.
Move the workspace or a node by dragging the mouse.
Left click the mouse on a node to edit some properties of a node or delete it.
Right click on IN nodes to change their state.
drag from a nodes output to another nodes input to create a wire.
delete a wire by clicking on its destination input.
Each Nodes output can source multiple wires, label source nodes can transmit signals to multiple destination labels without wires, they have no latency.
There are a number of examples to get you started...