In this experiment, we will construct a traffic light controller, which will control the traffic lights at the intersect

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In This Experiment We Will Construct A Traffic Light Controller Which Will Control The Traffic Lights At The Intersect 1 (99.87 KiB) Viewed 46 times

In this experiment, we will construct a traffic light controller, which will control the traffic lights at the intersection of Street1 and Street2, as shown below: B The traffic light controller will have a single CLK input and six outputs called R2, Y, G1, Ro, Y., GO -> RI -Y1 Traffic Light Controller -RD -YD Requirements: The traffic light should be red for Street1 and green for Street2 for three seconds. Then the light should turn yellow for Street2 for one second. Then the light should turn red for Street and green for Street1 for three seconds. Then the light should turn yellow for Street1 for one second, and then the whole sequence repeats. This sequence is depicted below: 1 sec R1 R1 @s 3 sec - Y1-1 sec - Y1 3 sec - Y1 G1 G1 61 G1 RO RO RO RO YO YO YO YO GO GO GO 00

Follow the following steps and check with your TA before starting to build the circuit. Show your work on separate sheets. • Draw a state transition diagram for this system. Create the state transition table for this system and a truth table for the output logic. Present simplified expressions for R1, G1, Ro, Go and your next state signals Q2, Q1, Q. .

Try to minimize the number of ICs you will need to use. It is possible to implement this system using two 74LS74 chips and only ONE of each the following: 74LS02, 74LS04, 74LS08, 74LS32, 74LS86. • Display R, and R, using red LEDs. Display Y and y, using yellow LEDs. Display G and Go using green LEDs. Use the function generator / power supply together as we did in Lab 5. Hints: Note that this system is essentially a 3-bit counter with output logic for the 6 outputs. We already built a 2-bit counter in Lab 5, so you can use that design as a starting point. • It's easier to compute Y, and Y, directly from the other outputs - were each street should have a yellow light if it does not have a red light or green light: o Y = R, +G o Y = Ro + Go Try to keep organized! Consider using some of the rails on the breadboard for your state bits or clock signal.