Question

For this problem you will analyze the updated design of the home security system from homework 4 The original home security system had a few problems: 2. Issue #1: Assuming the intruder stayed in the building longer than 30 seconds, the alarm would sound for 10 seconds then the "amber light to red light to alarm sequence" would repeat. The cause of this problem is the fact that the U2 counter will continue counting every 10 seconds. Once the counter reaches a count of (3ho, its next count would return to (0he Issue #2: There was no logic in place to disarm the system once a correct code was entered. If input B returned to a logic LOW, the system would re-arm while the home owner was still in the building. This issue would require the user to continuously enter a correct code to keep the system disarmed. Corrective components for Issue #1: To correct this issue the component US was added to the design along with additional combinational logic feeding the clk input signal of the U2 component. Corrective components for Issue #2: The system needs to disarm when a user enters the correct code, and then re-arm at the appropriate time. The U4 component was added to handle this requirement. Home Security System Green Amber Red Alarm

Answer 1