Computer Science for IGCSE & O level - Hardware (Section 12 - No. 47)
In the context of central heating systems, what is the purpose of the microprocessor?
To store the required temperature.
To convert the sensor data to digital data.
To compare the sensor data with a pre-set value and act accordingly.
To open or close the gas valve.
Explanation
The microprocessor compares the measured temperature with a pre-set value to control the heating system.