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Digital Electronics
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Digital Signal Processing
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Question
What is the result of taking more samples during the quantization process?
Options
A. More errors in the analog-to-digital conversion
B. More bit requirements
C. More accurate signal representation
D. More bit requirements and more accurate signal representation
Correct Answer
More bit requirements and more accurate signal representation
Digital Signal Processing problems
Search Results
1. Which term applies to the maintaining of a given signal level until the next sampling?
Options
A. Holding
B. Aliasing
C. Shannon frequency sampling
D. "Stair-stepping"
Show Answer
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Discuss
Correct Answer: Holding
2. A binary-weighted-input digital-to-analog converter has an input resistor of 100 kΩ. If the resistor is connected to a 5 V source, current through the resistor is ________.
Options
A. 50 mA
B. 50 µA
C. 5 mA
D. 500 µA
Show Answer
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Correct Answer: 50 µA
3. In a digital representation of voltages using an 8-bit binary code, how many values can be defined?
Options
A. 16
B. 64
C. 128
D. 256
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Correct Answer: 256
4. For a 4-bit DAC, the least significant bit (LSB) is ________.
Options
A. 6.25% of full scale
B. 0.625% of full scale
C. 12% of full scale
D. 1.2% of full scale
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Correct Answer: 6.25% of full scale
5. Which is a typical application of digital signal processing?
Options
A. Noise elimination
B. Music signal processing
C. Image processing
D. All of the above
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Correct Answer: All of the above
6. Which A/D conversion method has a fixed conversion time?
Options
A. Single-slope analog-to-digital converter
B. Dual-slope analog-to-digital converter
C. Digital-ramp analog-to-digital converter
D. Successive-approximation analog-to-digital converter
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Correct Answer: Successive-approximation analog-to-digital converter
7. Which type of ADC quantizes the analog signal into a stream of bits whose amount corresponds to the signal level?
Options
A. Successive approximation
B. Sigma-delta
C. Dual-slope
D. None of the above
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Correct Answer: Sigma-delta
8. The ADC0804 is an example of a ________.
Options
A. single-slope analog-to-digital converter
B. dual-slope analog-to-digital converter
C. digital-ramp analog-to-digital converter
D. successive-approximation analog-to-digital converter
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Correct Answer: successive-approximation analog-to-digital converter
9. A 4-bit R/2R ladder digital-to-analog converter uses ________.
Options
A. one resistor value
B. two resistor values
C. three resistor values
D. four resistor values
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Correct Answer: two resistor values
10. What do we call the manipulation of an analog signal in a digital domain?
Options
A. Analog-to-digital conversion
B. Digital-to-analog conversion
C. Digital signal processing
D. Signal filtering
Show Answer
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Correct Answer: Digital-to-analog conversion
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