Which device is used to convert analog signals from sensors into digital values for computers?

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Multiple Choice

Which device is used to convert analog signals from sensors into digital values for computers?

Explanation:
Converting a sensor’s analog signal into a digital value for a computer is done by an analog-to-digital converter. Sensors often output a continuous voltage that changes smoothly over time, but computers process data in discrete digital form. The ADC samples the signal at regular intervals (the sampling rate) and assigns each sample a numeric code that represents the signal’s amplitude at that moment. The quality of this conversion depends on the sampling rate and the resolution (how many bits) used to describe each sample, which together determine how accurately the digital value matches the original analog signal. The other devices described have different roles. A digital-to-analog converter does the reverse—turns digital values back into an analog signal. A digital signal processor handles processing of digital signals rather than converting analog inputs. A microcontroller is a broader device that may include an ADC as a built-in peripheral, but the actual conversion from analog to digital is performed by the ADC itself.

Converting a sensor’s analog signal into a digital value for a computer is done by an analog-to-digital converter. Sensors often output a continuous voltage that changes smoothly over time, but computers process data in discrete digital form. The ADC samples the signal at regular intervals (the sampling rate) and assigns each sample a numeric code that represents the signal’s amplitude at that moment. The quality of this conversion depends on the sampling rate and the resolution (how many bits) used to describe each sample, which together determine how accurately the digital value matches the original analog signal.

The other devices described have different roles. A digital-to-analog converter does the reverse—turns digital values back into an analog signal. A digital signal processor handles processing of digital signals rather than converting analog inputs. A microcontroller is a broader device that may include an ADC as a built-in peripheral, but the actual conversion from analog to digital is performed by the ADC itself.

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