sequential- Circuit Model System Input System Variables工n output ombinational Variables logic ■SetI{工o…n} SetO{O0…On} are external are external input variables output variables presented to Excitation M the system Variables ECombinational logic System Input Variables System output Variables I0 In O0 Om S0 Sx M0 Ex State Variables Excitation Variables MX E0 ◼ Set I{ I0……In } are external input variables presented to the system. ◼ Set O{ O0……Om } are external output variables