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.
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If the temperature is low, the gas valve opens to increase heating.