Challenge from lesson 1.7

Understanding Maths and Logic in Computer Science

AND gate application: intruder alarm example

A real-life example of this would be an intruder alarm system in which the intruder alarm only goes off if the intruder alarm is switched on AND the sensor in the hallway detects motion.

NOT gate application

When a central heating thermostat detects that the heat has gone below 19°C, i.e. the heat sensor is NOT picking up a reading above 19°C, the heating comes on.

Combination of the previous two

How could you link the intruder alarm example and the central heating example to produce a circuit that doesn’t put the heating on when there is nobody in the house?