A Block Diagram is a graphical representation of a System that conveys the step-by-step procedure of a system. It is good for conveying the step-by-step procedure of a system, but is potentially unintuitive in expressively conveying ultimate effect of the system and requires tracing to understand.
See DT LTI System Representations for additional context.
Cyclic
A Block Diagram is a Digraph
- A system’s Block Diagram has Feedback iff the signal flow graph is Cyclic.
- A system’s Block Diagram is Feed-Forward iff the signal flow graph is Acyclic.