What do you call the point in a circuit where signals can be combined or separated?

The correct term for the point in a circuit where signals can be combined or separated is referred to as a "Node." In digital electronics, a node is a connection point where two or more circuit elements are joined. It is significant because it serves as the location where electrical signals can converge or diverge, allowing data to either be routed through a circuit or shared among different components.

In comparison, a bus is a communication system that transfers data between components, but it is not a point within the circuit itself. A gate is a fundamental building block in digital circuits that performs a logical function, but it does not specifically refer to a point where signals combine or separate. Lastly, a channel typically describes a medium through which signals are transmitted, such as in communications, rather than the point of signal interaction. Thus, the term "Node" accurately represents the concept of a junction for signal interaction in circuit design.