GCSE AQA Computer Science Boolean Logic Diagrams: A farmer uses an automated syste

Question

A farmer uses an automated system to indicate if soil conditions are right for planting. 
The conditions are right for planting if the soil is:

- warm
- wet
- the correct acidity.

Figure 2 shows the logic circuit for this system.

The inputs to the system are:

Soil temperature (T):
0 if the soil is cold
1 if the soil is warm.

Soil moisture (M):
0 if the soil is dry
1 if the soil is wet.

Soil acidity (A):
0 if the soil is the correct acidity.
1 if the soil acidity needs adjusting.

The output (P) is:
0 if the conditions for planting have not been met.
1 if the conditions for planting have been met.

Complete the truth table for the circuit in Figure 2.

State the type of logic gate shown in Figure 3.

The farmer wants to modify the system so that it will indicate that the soil conditions are right for planting if at least one of the three conditions has been met.

Describe changes that could be made to the logic circuit in Figure 2 to allow this to happen.

A farmer uses an automated system to indicate if soil conditions are right for planting - AQA - GCSE Computer Science - Question 11 - 2021 - Paper 1

Worked Solution & Example Answer:A farmer uses an automated system to indicate if soil conditions are right for planting - AQA - GCSE Computer Science - Question 11 - 2021 - Paper 1

Complete the truth table for the circuit in Figure 2:

State the type of logic gate shown in Figure 3:

Describe changes that could be made to the logic circuit in Figure 2 to allow this to happen:

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