Digital Circuits [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 187 - 190 of 271

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Question 187

Digital Circuits
Memory and I-O Interfacing

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

The interrupts in 8085 processor are

1. RST 7.5

2. RST 6.5

3. RST 5.5

4. TRAP

Keep the sequence from least priority to highest priority

Choices

Choice (4)Response

a.

1,2, 3,4

b.

4,3, 2,1

c.

1,4, 3,2

d.

3,2, 1,4

Question 188

Digital Circuits
Arithmetic Circuits, Code Converters, Multiplexers, Decoders and PLAs

Appeared in Year: 2013 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

A half-adder is faster than full-adder.

Reason(Ꭱ)

A half-adder gives only one output while a full adder gives two outputs.

Choices

Choice (4)Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are false

c.

Ꭺ is false but Ꭱ is true

d.

Ꭺ is true but Ꭱ is false

Question 189

Digital Circuits
Latches and Flip-Flops

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Consider the following statements:

1. Race around condition occurs in a JK flip-flop when both the inputs are one.

2. A flip-flop is used to store one bit of information.

3. A transparent latch consists in D-type in flip-flop.

4. Master-Slave configuration is used in flip-flop to store two bits of information.

Which of these statements are correct?

Choices

Choice (4)Response

a.

1,2 & 4 only

b.

1,3 & 4 only

c.

1,2 & 3 only

d.

2,3 & 4 only

Question 190

Digital Circuits
Boolean Algebra, Minimization of Functions

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

The figure of merit of logic family is given by

Choices

Choice (4)Response

a.

Gain bandwidth product

b.

(Propagation delay time) (power dissipation)

c.

(Noise margin) (power dissipation)

d.

(Fan out) (propagation delay time)

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