Computer Science for IGCSE & O level - Hardware (Section 9 - No. 18)
In a chemical process control system, what is the function of the DAC (Digital-to-Analog Converter)?
To convert analog sensor signals to digital data.
To convert digital signals from the computer into analog signals for the valves and heaters.
To store digital data in memory.
To compare the sensor data to pre-set values.
Explanation
The DAC converts the computer's digital output into analog signals that control the valves and heaters.
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