Question 18 – Boolean logic - AQA Computer Science Questions

Boolean logic Questions

Practise AQA GCSE Computer Science Boolean logic with exam-style questions for GCSE Computer Science. 83 questions, matched to the AQA GCSE Computer Science (8525) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

An automatic irrigation system in a greenhouse is being developed to control a water pump.

The system has two soil moisture sensors, $M_1\,$ and $M_2$ , that output a 1 if they detect dry soil. The pump should turn on if either of these sensors is activated.
The pump should only turn on if a rain sensor, $R$ , indicates it is NOT raining (outputs a 0).
The output to turn the pump on is $P$ .

Complete the logic circuit for this system by drawing or identifying the correct gates and connections.

A logic circuit template. On the left side, there are three input terminals labeled M1, M2, and R. On the right side, there is one output terminal labeled P. In the center is a blank area for drawing logic gates and connecting wires.