sequential- Circuit Model Excitation variables Input Output (E Combinational Memory Combinational (O) transform (S) logic CLK M (9) State variables a The memory excitation input relationship can be written as D E=f(I, S) Excitation E force the memory elements to the desired state variables Output O is generated by the combinational logic transform, g), operating on input variables I and state variables s 口O=g(I,5)◼ The memory excitation input relationship can be written as  E = f( I, S ). Excitation E force the memory elements to the desired state variables. ◼ Output O is generated by the combinational logic transform, (g), operating on input variables I and state variables S.  O = g( I, S ) Combinational transform (f) Memory M Combinational logic (g) Input (I) (E) CLK State variables (S) Excitation variables Output (O)