sequential- Circuit Model Excitation variables Input Output (E Combinational Memory Combinational (O) transform (S) logic CLK M (9) State variables ■E=f(工,S) ■O=g(工,5) a The clock input is not a binary value representing the time of day but rather a"synchronous"train of pulses. Synchronous memory changes its data only at certain time intervals◼ E = f( I, S ) ◼ O = g( I, S ) ◼ The clock input is not a binary value representing the time of day, but rather a ”synchronous” train of pulses. Synchronous memory changes its data only at certain time intervals. Combinational transform (f) Memory M Combinational logic (g) Input (I) (E) CLK State variables (S) Excitation variables Output (O)