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Module 4: DAQ Systems

2025?m

A microcontroller-based DAQ system mainly performs:
(i) Data storage only
(ii) Conversion of physical signals into digital form
(iii) Power amplification
(iv) Battery charging

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Answer

Correct option: (ii) Conversion of physical signals into digital form

Explanation

A microcontroller-based DAQ system acquires signals from sensors and converts them into digital values for processing.

The typical sequence is:

Sensor → Signal Conditioning → ADC → Microcontroller → Processing/Storage/Communication

For example, an analog temperature sensor may produce 0–5 V. The ADC inside or connected to the microcontroller converts this voltage into a digital code, which the microcontroller can use to calculate temperature.

Therefore, the correct answer is (ii).

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