a block diagram represents the flow of information and the function performed by each component in the system Arrows are used to show the direction of the flow of information The block represents the the function or dynamic characteristics of the component and is represented by a transfer function The complete block diagram shows how the functional components are connected and the mathematic equations that determine the response of each component• A block diagram represents the flow of information and the function performed by each component in the system. • Arrows are used to show the direction of the flow of information. • The block represents the the function or dynamic characteristics of the component and is represented by a transfer function. • The complete block diagram shows how the functional components are connected and the mathematic equations that determine the response of each component