University Questions with Answers (Long Answered Questions)

University Questions with Answers

(Long Answered Questions)

(Regulation 2008)

Dec.-10

Q.1 List and explain the steps used for analyzing an asynchronous sequential circuit. [Section 7.5]   [8]

Q.2 When do you get the critical and non-critical races ? How will you obtain race free conditions ? [Section 7.6]        [10]

May-11

Q.3 Describe the steps involved in design of asynchronous sequential circuit in detail with an example. [Section 7.6]    [16]

Dec.- 11

Q.4 State the condition of stability in asynchronous sequential logic. [Section 7.5] [4]

Q.5 When does oscillation occur in an asynchronous sequential logic circuit ? [Section 7.5]   [4]

May-12

Q.6 List and explain the steps used for analyzing an asynchronous sequential circuit. [Section 7.5] [8]

Dec.-12

Q.7 Describe the steps involved in design of asynchronous sequential circuit in detail with an example. [Section 7.6]    [16]

May-13

Q.8 List and explain the steps used for analyzing an asynchronous sequential circuit. [Section 7.5] [8]

(Regulation 2013)

Dec.-14

Q.9 Describe with reasons, the effect of races in asynchronous sequential circuit design. Explain its types with illustrations. Show the method of race-free state assignments with examples. [Section 7.6]         [16]

May-16

Q.10 Explain cycles and races in asynchronous sequential circuits. [Section 7.6.2] [8]

Q.11 What are transition table and flow table ? Give suitable examples. [Section 7.6]   [8]

May-17

Q.12 A control mechanism for a vending machine accepts nickels and dimes. It despense merchandise when 20 cents is deposited; it does not give change if 25 cents is deposited. Design the FSM that implements the required control, using as few states as possible. Find a suitable assignment and derive next - state and output expressions.       [13]

Q.13 Write the VHDL code for the given state diagram, using behavioral modeling. Design it using one - hot state assignment and implement it using Programmable Array Logic (PAL). [15]

 Dec.-17

Q.14 Design an asynchronous sequential circuit with two inputs x1 and x2 and one output Z. Initially, both inputs are equal to zero. When x^ or x2 becomes 1, the output Z becomes 1. When the second input also becomes 1, the output changes to 0. The output stays at 0 until the circuit goes back to the initial state.    [15]

Q.15 Discuss about the hazards in asynchronous sequential circuit and the ways to eliminate them. [Section 7.6.3]      [13]