ADC & DAC Interfacing with 89C51 Microcontroller - MCQs with answers

ADC & DAC Interfacing with 89C51 Microcontroller - MCQs with answers

1. Which factors indicate the necessity of sample and hold circuit in the process of analog-to-digital conversion?

a. Instantaneous variation in an input signal
b. Analog-to-digital conversion time
c. Both a & b
d. None of the above

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2. Which pin/signal of ADC AD571 interfacing apprises about the accomplishment of data reading in the microcontroller so as to indicate ADC to get ready for the next data sample?

a. BLANK /CONVERT (high)
b. BLANK/DR (low)
c. DATA READY (DR)
d. All of the above

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3. Which errors are more likely to get generated by conversion time and ADC resolution respectively in accordance to the digital signal processing?

a. Sampling & Quantization Errors
b. Systematic & Random Errors
c. Overload & Underload Errors
d. None of the above

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