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Design a Traffic Light Controller (TLC) digital circuit which will operate in the following sequence: Red, Red, Red Yellow, Green, Green, Green, Yellow, Red, Red, Red, Yellow, Green, Green, Green, and repeat. The time of each state (Green or Red or Yellow) will be decided based on the clock cycle frequency (T=1/f). The sequence is shown in the below state diagram, design the Traffic Light Controller (TLC) using D flip-flops. 000 001 010 011 (R) (R) (R) (Y) 110 101 100 111 (Y) (G) (G) (G) PLD1 U5 lk Red Yell F Hz Grn Traffic Light Controller S1 VCC 5.0V S2 S3 U4 TRAFFIC_LIGHT_SINGLE

Present Next state State ABC A+ B+ C+ Red 000 001 + + 0 1 0 11 ÷ 100 ÷ 101 11 0 1 1 1 ›0o---- + + ÷ »< 4 ÷ + Output Yellow + + ÷ Green + + ÷ + ÷ • DA= • DB= BC 00 01 11 10 BC 00 01 11 10 0 + 0 + + A A 1 + + + 1 +

• De= • Red= BC CO 01 11 10 A BC- 0 1 CO + # 01 4 11 + # 10 + 0 * + + # 1 # # • Yellow- • Green= BC 00 01 11 10 BC 00 01 11 10 0 + 0 A A 1 1 +

• Calculate the frequency of the clock if the Red signal should be ON for 300 seconds. f= + Hz Please answer all parts of the question. Implement the circuit in Multisim. Upload your design circuit here(the Multisim circuit not a picture of it).