1
State the principle of duality.

2 M

2
Implement AND gate using only NOR gates.

2 M

3
Implement the following Boolean function using 8:1 multiplexer F(A,B,C)=∑m(1, 3, 5, 6).

2 M

4
Define hazard.

2 M

5
Distinguish Moore and Mealy circuit.

2 M

6
With reference to a JK flip flop, what is racing?

2 M

7
How many states are there in a 3-bit ring counter? What are they?

2 M

8
What is a Priority Encoder?

2 M

9
Whether PAL is same as PLA? Explain.

2 M

10
What is volatile memory? Give example.

2 M

Answer any one question from Q11 (a) & Q11 (b)

11 (a)
Simplify the function F(w,x,y,z)=∑m(2, 3, 12, 13, 14, 15) using tabulation method. Implement the simplified function using gates.

16 M

11 (b) (i)
Simplify the Boolean function in Sum of Products (SOP) and Product of Sums (POS) F(A, B, C, D)=∑m(0,1,2,5,8,9,10).

10 M

11 (b) (ii)
Plot the following Boolean function in Karnaugh map and simplify it. F(w, x, y, z)=∑m (0, 1, 2, 4, 5, 6, 8, 9, 12, 13, 14).

6 M

Answer any one question from Q12 (a) & Q12 (b)

12 (a)
Design and implement a 8421 to gray code converter. Realize the converter using only NAND gates.

16 M

12 (b)
Design 2-bit Magnitude Comparator and write a Verilog HDL code.

16 M

Answer any one question from Q13 (a) & Q13 (b)

13 (a)
Design a MOD-10 Synchronous counter using JK flip-flops. Write execution table and state table.

16 M

13 (b) (i)
How race condition can be avoided in a flip flop?

8 M

13 (b) (ii)
Realize the sequential circuit for the state diagram shown below.

8 M

Answer any one question from Q14(a) & Q14 (b)

14 (a)
An asynchronous sequential circuit is described by the following excitation and output function.

Y=X

Z=Y.

i) Draw the logic diagram of the circuit.

ii) Derive the transition table and output map.

iii) Describe the behaviour of the circuit.

Y=X

_{1}X_{2}+(X_{1}+X_{2})YZ=Y.

i) Draw the logic diagram of the circuit.

ii) Derive the transition table and output map.

iii) Describe the behaviour of the circuit.

16 M

14 (b)
Design a synchronous counter using JK flip flop to count the following sequence 7, 4, 3, 1, 5, 0, 7, ....

16 M

Answer any one question from Q15 (a) & Q15(b)

15 (a)
Design a BCD to Excess-3 code converter and implement using suitable PLA.

16 M

15 (b)
Discuss on the concept of working and applications of semiconductor memories.

16 M

More question papers from Digital Principles and System Design