The basic state machine design pattern consists of which of the following structures? Group of answer choices A case structure nested in a for loop A sequence structure nested in a for loop A sequence structure nested in a while loop A type defined constant and a shift register. A case structure nested in a while loop
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A state machine typically consists of a set of states and transitions between those states based on certain conditions or inputs. Show more…
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An older model Ford Thunderbird has three left and three right taillights which flash in unique patterns to indicate left and right turns. You will design a Moore machine to control these lights. The circuit has three inputs L (for Left), R (for Right), and H (for Hazard). L and R come from the driver’s turn signal switch and cannot be 1 at the same time. When L=1 the lights La, Lb, Lc flash in the following pattern: La on; La and Lb on; La, Lb, and Lc on; all off; and then the sequence repeats. When R=1 the lights Ra, Rb, Rc flash in the following pattern: Ra on; Ra and Rb on; Ra, Rb, and Rc on; all off; and then the sequence repeats. Position of tail lights: Lc Lb La Ra Rb Rc If a switch from L to R (or vice versa) occurs in the middle of a flashing sequence, the circuit should immediately go to the IDLE state (all lights off) and then start the new sequence. H comes from the Hazard switch, and when H=1 all six lights flash on and off in unison. H takes precedence if L or R is also on. If H switches from 0 to 1 while in any state other than IDLE, the circuit should switch to IDLE first. Assume that a clock signal is available with a frequency equal to the desired flashing rate. Lab Requirements For this lab, you will design the digital circuit to control the operation of the six lights. Make sure to document your work a. Draw the state diagram (eight states) using any software (Microsoft Word, Visio, etc.) b. Choose a state assignment (binary labels) for the eight states that can be stored using three D flip-flops. You can choose any labels for each state. c. Design logic expressions for the next state for each of the three D flip-flops. Use one of the two links (on the next page) to an online tool to get the Next-State Equations.
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Which of the following statements will make a selection construct? 1. if 2. if else 3. for 4. While
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