# 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▾

### 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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