Advanced Microprocessors

Advanced Microprocessors

Easy Questions

Microprocessor

8085 Microprocessors
Advanced Microprocessors
  1. A 10 bit A/D convertor is used to digitize an analog signal in the 0 to 5 V range. The maximum peak to peak ripple voltage that can be allowed in the d.c. supply voltage is—








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    Smallest incremental change =
    1
    		 =
    1
    2101024

    For 5V,
    5
    		 = nearly 5 mV
    1024

    Hence alternative (D) is the correct answer.

    Correct Option: D

    Smallest incremental change =
    1
    		 =
    1
    2101024

    For 5V,
    5
    		 = nearly 5 mV
    1024

    Hence alternative (D) is the correct answer.

  1. The number of comparator carried out in a 4 bit flashtype A/D converter is—








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    No. of comparator required = 2n – 1
    (where, n = no. of bits)
    = 24 – 1 = 15
    Hence alternative (B) is the correct answer.

    Correct Option: B

    No. of comparator required = 2n – 1
    (where, n = no. of bits)
    = 24 – 1 = 15
    Hence alternative (B) is the correct answer.

  1. Among the following the slowest ADC is—








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    Integrating type ADC are more accurate but slow.

    Correct Option: C

    Integrating type ADC are more accurate but slow.

  1. Which of the following is D to A conversion technique?








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    Among the given, weighted resistor technique is only D to A conversion technique.

    Correct Option: B

    Among the given, weighted resistor technique is only D to A conversion technique.

  1. The minimum Boolean for the following circuit is—








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    If any of the 1, 2 or 3 switch are close, output Y will be 1.
    Hence form OR function so output,
    Y = A (B + C) + AB + (A + B) C
    or Y = AB + AC + AB + AC + BC
    or Y = AB + AC + BC
    Hence alternative (A) is the correct answer.

    Correct Option: A


    If any of the 1, 2 or 3 switch are close, output Y will be 1.
    Hence form OR function so output,
    Y = A (B + C) + AB + (A + B) C
    or Y = AB + AC + AB + AC + BC
    or Y = AB + AC + BC
    Hence alternative (A) is the correct answer.