86 structures for discrete-time system 6.0 Introduction 6. 1 Block Diagram Representation of Linear Constant-Coefficient Difference Equations 6.2 Signal Flow Graph Representation of Linear constant-Coefficient difference Equations 6. 3 Basic structures for iir Systems 6. 4 Transposed Forms 6.5 Basic Network structures for Fir Systems2 6.0 Introduction 6.1 Block Diagram Representation of Linear Constant-Coefficient Difference Equations 6.2 Signal Flow Graph Representation of Linear Constant-Coefficient Difference Equations 6.3 Basic Structures for IIR Systems 6.4 Transposed Forms 6.5 Basic Network Structures for FIR Systems §6 structures for discrete-time system