(State Assignment) Try some random encodings of the traffic-light controller that are non-dense. That is, map the four states into eight (3 bits) or sixteen (4 bits) possible states. How do they compare in terms of literal count to the encodings found in the Exercise 1?
Exercise 1
(State Assignment) One method for state assignment is to exhaustively enumerate all the possible state assignments. Given the traffic-light controller symbolic state table of Figure 8.24, use a logic minimization tool to evaluate all 24 possible 2-bit encodings of the states (alternatively, choose two to four random assignments and derive the logic by hand). Using literal count as your metric, which is the best encoding?
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