The picture below shows the intersection of a road. Some vehicle detection sensors are placed along lanes C and D (main road) and lanes A and B (access road). These sensors outputs are LOW (0) when no vehicle is present and HIGH (1) when a vehicle is present. The intersection traffic light is to be controlled according to the following logic: The east-west (E-W) traffic light will be green whenever both lanes C and D are occupied. The E-W light will be green whenever either C or D is occupied but lanes A and B are not both occupied. The N-S light will also be green whenever both lanes A and B are occupied but C and D are not both occupied. The N-S light will also be green when either A or B is occupied while C and D are both vacant. The E-W light will be green when no vehicles are present. Using the sensor outputs A, B, C and D as inputs, design a logic circuit to control the traffic light. There should be two outputs-S and E-W that go HIGH when the corresponding light is to be green. Simplify the circuit as much as possible and show all steps. Complete the following with the step-by-step procedure. Interpret the problem and set up a truth table to describe its operation. Write the AND (product) term for each case where the output is 1. Write the sum-of-products (SOP) expression for the output. Simplify the output expression if possible. Implement the circuit for the final, simplified expression.

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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The picture below shows the intersection of a road. Some vehicle detection sensors are placed along lanes C and D (main road) and lanes A and B (access road). These sensors outputs are LOW (0) when no vehicle is present and HIGH (1) when a vehicle is present. The intersection traffic light is to be controlled according to the following logic:

The east-west (E-W) traffic light will be green whenever both lanes C and D are occupied.
The E-W light will be green whenever either C or D is occupied but lanes A and B are not both occupied.
The N-S light will also be green whenever both lanes A and B are occupied but C and D are not both occupied.
The N-S light will also be green when either A or B is occupied while C and D are both vacant.
The E-W light will be green when no vehicles are present.

Using the sensor outputs A, B, C and D as inputs, design a logic circuit to control the traffic light. There should be two outputs-S and E-W that go HIGH when the corresponding light is to be green. Simplify the circuit as much as possible and show all steps.

Complete the following with the step-by-step procedure.