Computer Science for IGCSE & O level - Hardware (Section 9 - No. 17)
What is the function of the gas valve in a central heating system controlled by a microprocessor?
To measure the water temperature.
To regulate the flow of gas to the heater.
To circulate the water.
To convert the analog signal to digital.
Explication
The gas valve regulates the gas supply to the heater based on commands from the microprocessor.