●●●●● Analysis principle :g8.o ●●●● o Write the next state equations for each state variable, using the flip-flop characteristics equation and the circuit excitation equations or construct the excitation table from the excitation equations Construct a transition table. Identify all of the states possible for a given number of state variables o Assign symbols to the states and construct a state table or state diagram When possible, construct a timing diagram
⚫ Write the next state equations for each state variable, using the flip-flop characteristics equation and the circuit excitation equations, or construct the excitation table from the excitation equations. ⚫ Construct a transition table. Identify all of the states possible for a given number of state variables. ⚫ Assign symbols to the states and construct a state table or state diagram. ⚫ When possible, construct a timing diagram. Analysis principle
Analysis flowchart:° ●●0 ●●● ●●●● Logic circuit Output variable equations &excitation equations table algebra Next-state truth table Next-state equations flip-flop Flip-flop Characteristic table State diagram Characteristic state table equation Describe the circuit by a timing diagram and statement
Logic circuit Output variable equations &Excitation equations Next-state truth table Next-state equations flip-flop Characteristic table State diagram &State table Describe the circuit by a timing diagram and statement Flip-flop Characteristic equation table algebra Analysis flowchart
Example 6.2 ●●●●● ●●●● ●●0 ●●● ●●●● projecTile =L/(t2-t1) t2 STARTN STOPN START STOP Start/stop sensor
Example 6.2 Start/stop sensor START STARTN STOP STOPN t1 t2 L Vprojectile = L/ (t2-t1)
Example 6.28988 ●●0 ●●● ●●●● Start/stop sensors As the bullet passes over the start sensor, the start signal (SRT) is generated When the same bullet passes over the stop sensor, the stop signal (STP) is generated STARTN STOPN START(SRD) STOP(STP) Start/stop sensor
⚫ Start/ stop sensors ⚫ As the bullet passes over the start sensor, the start signal (SRT) is generated. ⚫ When the same bullet passes over the stop sensor, the stop signal (STP) is generated. Example 6.2 Start/stop sensor START (SRT) STARTN STOP (STP) STOPN