Computer Science for IGCSE & O level - Hardware (Section 13 - No. 17)
In a central heating system, what happens when the sensor data indicates the temperature is below the pre-set value?
The microprocessor sends a signal to turn off the heater.
The gas valve opens to provide more heat.
The pump stops circulating water.
The sensor data is ignored.
Giải thích
If the temperature is low, the gas valve opens to increase heating.