Short Questions

1(a)
What is difference between latch and flip-flop?

1 M

1(b)
Define Fan-out.

1 M

1(c)
What is the use of state diagram?

1 M

1(d)
Which gates are called as universal gates? What are its advantages?

1 M

1(e)
State the associative property of Boolean algebra

1 M

1(f)
List the types of ROM.

1 M

1(g)
What are called Don't care conditions?

1 M

1(h)
What is propagation delay?

1 M

1(i)
What is prime implicant?

1 M

1(j)
How many words a 16*8 memory can store?

1 M

1(k)
Define race around condition.

1 M

1(l)
Which TTL logic gate is used for wired ANDing?

1 M

1(m)
What is a state equation?

1 M

1(n)
Define Nibble.

1 M

2(a)
Explain the working of multiplexer.

3 M

2(b)
State and explain De Morgan's theorems with truth tables.

4 M

Solve any one question from Q.2(c) & Q.2(d)

2(c)
Explain two input CMOS NAND gate.

7 M

2(d)
Write short note on half adder and full adder.

7 M

Solve any three question from Q.3(a), Q.3(b), Q.3(c) & Q.3(d), Q.3(e), Q.3(f)

3(a)
Define the following terms.

I. Noise Margin II. PROM III. Negative Logic

I. Noise Margin II. PROM III. Negative Logic

3 M

3(b)
What are the different types of the codes used in digital systems? Explain them.

4 M

3(c)
Design 4 bit binary to gray code converter.

7 M

3(d)
Do as directed :

I. Given that (16)

II. Add (6E)

III. (4433)

I. Given that (16)

_{10}= (100)_{x}, find the value of x.II. Add (6E)

_{16}and (C5)_{16}III. (4433)

_{5}= ( )_{10}= ( )_{2}
3 M

3(e)
Do as directed :

I. (1011011101101110)

II. Subtract (45)

III. Covert the Gray code 1101 to binary

IV. Find the XS-3 code of 37

I. (1011011101101110)

_{2}= ( )_{16}II. Subtract (45)

_{8}from (66)_{8}III. Covert the Gray code 1101 to binary

IV. Find the XS-3 code of 37

4 M

3(f)
Show that A ⊙ B = AB + A'B' = (A ⊕ B)' = (AB'+A'B)'. Also construct the corresponding logic diagrams.

7 M

Solve any three question from Q.4(a), Q.4(b), Q.4(c) & Q.4(d), Q.4(e), Q.4(f)

4(a)
Give the applications of Decoder.

3 M

4(b)
Implement the given function using multiplexer F(A,B,C) = ∑m(1,2,4,7)

4 M

4(c)
Reduce the expression F = ∑m(0,2,3,4,5,6) using K-map and implement using NAND gates only.

7 M

4(d)
Reduce the expression F = ((AB)'+A'+AB)'

3 M

4(e)
Explain the types of finite state machines?

4 M

4(f)
Distinguish between combinational and sequential logic circuits. Give the applications of flip-flops.

7 M

Solve any three question from Q.5(a), Q.5(b), Q.5(c) & Q.5(d), Q.5(e), Q.5(f)

5(a)
Write a short note on FPGA.

3 M

5(b)
Design 4-to-16 Decoder from two 3-to-8 Decoders.

4 M

5(c)
Design a synchronous BCD counter with JK flip-flops.

7 M

5(d)
Implement T flip flop using D flip flop.

3 M

5(e)
Give the comparison between synchronous and asynchronous counters.

4 M

5(f)
Write a note on Memory.

7 M

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