Why Implement system Using Different Structures? Equivalent structures with regard to their input-output characteristics for infinite-precision representation,may have vastly different behavior when numerical precision is limited. Computational structures(Modeling methods): ◆Block Diagram ◆Signal Flow Graph 77 Why Implement system Using Different Structures? ◆Equivalent structures with regard to their input-output characteristics for infinite-precision representation, may have vastly different behavior when numerical precision is limited. ◆Computational structures(Modeling methods): ◆Block Diagram ◆Signal Flow Graph