Q3: A dive boat captain needs to know if it is safe for divers to enter the water. He gets a liability insurance discount if he installs an electronic system onboard which will determine when it is safe to dive. In this exercise, you are tasked with the design of this dive-safety computing system. The system has four sensors: 1. An underwater motion detector (M) that determines if sharks are in the area. M=1 when sharks are present; 2. a thermometer (T) to measure water temperature as "warm" or "cold" (above or below threshold). T=1 means the temperature is warm; 3. an anemometer (A) which determines if winds are high or low. A=1 means winds are high; 4. a barometer (B) which senses whether atmospheric pressure is rising (nice weather coming) or falling (storm approaching). B=1 means Nice weather is coming. Divers will be eaten if they enter warm water with sharks in the area, but the sharks will not eat in cold water. If there is no shark danger then it is safe to dive if winds are low. In high wind conditions, it is safe to dive only if the weather is not likely to get worse. For this dive-safety system: a) Construct a truth table for the safe conditions b) From the truth-table, derive a simplified expression using Boolean Algebra rules. b) Draw the circuit using any of the 2 or 3 input LOGIC ELEMENTS (AND, OR, NOT, NAND, NOR, XOR, XNOR) Q3: A dive boat captain needs to know if it is safe for divers to enter the water. He gets a liability insurance discount if he installs an electronic system onboard which will determine when it is safe to dive. In this exercise, you are tasked with the design of this dive-safety computing system. The system has four sensors: 1. An underwater motion detector (M) that determines if sharks are in the area. M=1 when sharks are present; 2. a thermometer (T) to measure water temperature as "warm" or "cold" (above or below threshold). T=1 means the temperature is warm; 3. an anemometer (A) which determines if winds are high or low. A=1 means winds are high; 4. a barometer (B) which senses whether atmospheric pressure is rising (nice weather coming) or falling (storm approaching). B=1 means Nice weather is coming. Divers will be eaten if they enter warm water with sharks in the area, but the sharks will not eat in cold water. If there is no shark danger then it is safe to dive if winds are low. In high wind conditions, it is safe to dive only if the weather is not likely to get worse. For this dive-safety system: a) Construct a truth table for the safe conditions b) From the truth-table, derive a simplified expression using Boolean Algebra rules. b) Draw the circuit using any of the 2 or 3 input LOGIC ELEMENTS (AND, OR, NOT, NAND, NOR, XOR, XNOR)
