Electrical and Computer Engineering 2277A/B Lecture 35: Synchronous Sequential Circuit Analysis

• School: Western University
• Department: Electrical and Computer Engineering
• Course: Electrical and Computer Engineering 2277A/B
• Professor: Duane Jacques

Document Summary

Flip-flop input equations: current flip flop inputs as a function of current circuit inputs and states. State equations: next state of each flip flop as function of current states and circuit inputs. Output equations: current outputs as a function of current states and circuit inputs. State table: lists next state of each flip flop and current circuit output for all possible combinations of current states and circuit inputs. State diagram: graphical representation of transitions between states in response to circuit inputs. Equation(s) for next state of flip flop(s) are written based on the characteristic equation for that type of flip flop. Complete description of circuit also requires output equations, which are written using combinational circuit analysis. One column for each current state, current input, next state, and current output. One row for each possible combination of current state(s) and current input(s) A circuit with input bits and flip flops will have 2n+m rows in its state table.