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Thread: Need Viva Questions

  1. #1
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    Favorite 32 Need Viva Questions

    can anyone post the digital circuits viva questions plz



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    Active FaaDoO Engineer ammusonu's Avatar
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    Re: need for help

    on which topic u want the question ? Question may be asked related to counter, flip flops, gates, mux, boolean algebra..

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    Active FaaDoO Engineer ammusonu's Avatar
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    Re: need for help

    1. A logic circuit that provides a HIGH output for both inputs HIGH or both inputs LOW is a(n):
    A. Ex-NOR gate
    B. OR gate
    C. Ex-OR gate
    D. NAND gate


    2. A logic circuit that provides a HIGH output if one input or the other input, but not both, is HIGH, is a(n):
    A. Ex-NOR gate
    B. OR gate
    C. Ex-OR gate
    D. NAND gate


    3. Identify the type of gate below from the equation
    A. Ex-NOR gate
    B. OR gate
    C. Ex-OR gate
    D. NAND gate

    5. Determine the output frequency for a frequency division circuit that contains 12 flip-flops with an input clock frequency of 20.48 MHz.
    A. 10.24 kHz
    B. 5 kHz
    C. 30.24 kHz
    D. 15 kHz
    6. How is a J-K flip-flop made to toggle?
    A. J = 0, K = 0
    B. J = 1, K = 0
    C. J = 0, K = 1
    D. J = 1, K = 1

    7. How many flip-flops are in the 7475 IC?
    A. 1 B. 2
    C. 4 D. 8

    8. How many flip-flops are required to make a MOD-32 binary counter?
    A. 3 B. 45
    C. 5 D. 6

    9. A MOD-16 ripple counter is holding the count 10012. What will the count be after 31 clock pulses?
    A. 10002 B. 10102
    C. 10112 D. 11012


    10. The terminal count of a modulus-11 binary counter is ________.
    A. 1010 B. 1000
    C. 1001 D. 1100

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    Re: need for help

    Lab viva questions on counters, flipflops, mux...post any lab related material, like designing the circuits etc

  5. #5
    Active FaaDoO Engineer ammusonu's Avatar
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    Re: Need Viva Questions

    here are some questions:
    1.which are types of modeling styles.
    2. Which style is used for design of Full adder using half adder?
    3. difference between behavioral and data flow modeling.
    4. Bolean expressions for all combinational logics such as half adder, full adder,bin to gray and gray to bin,bcd 2 excess-3 etc.
    5. Sequential statements
    6. What is port declaration?
    7. Types of counters, block diagrams, programming.
    8. writtting pgm for mux, decoder etc.using basic logic gates or components
    9 What is component instantiation?
    10 define simulation and synthesis.
    11. which simulator u use?
    12. how to declare clock
    13. differnce betn latch and flip flop
    14 What is RTL?

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