Computer Science for IGCSE & O level - Hardware (Section 14 - No. 14)
Which of the following components are typically found in a central heating system controlled by a microprocessor?
A sensor to measure the temperature.
A pump to circulate water.
A gas valve to control the flow of gas.
A DAC (Digital-to-Analog Converter).
Обяснение
The central heating system includes a sensor, a pump, and a gas valve, and may use a DAC for signal conversion.