Digital Circuits [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 196 - 199 of 271

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Question 196

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

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

The logic gate normally used to get the carry bit in a half adder is

Choices

Choice (4)Response

a.

OR

b.

EX-OR

c.

NOT

d.

AND

Question 197

Digital Circuits
Memory and I-O Interfacing

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

The following microprocessor operations are part of interrupt cycle of a control unit:

1. MAR Save-address

2. PC Routine-address

3. MBR (PC)

4. Memory MBR

Which of the following is the correct order of their occurrence?

Choices

Choice (4)Response

a.

2,3, 4

b.

4,3, 1

c.

1,2, 3

d.

3,4, 2

Question 198

Digital Circuits
Sample and Hold Circuits, ADCs and DACs

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Which type of analogue-to-digital converter is often used in digital voltmeter?

Choices

Choice (4)Response

a.

Flash converter

b.

Successive approximation method

c.

Single slope A/D converter

d.

Dual slope A/D converter

Question 199

Digital Circuits
Memory and I-O Interfacing

Appeared in Year: 2013 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

A programmable Read-Only-Memory can be used as a synchronous counter.

Reason(Ꭱ)

Each memory location of a programmable Read-Only- Memory is programmed and can be read synchronously.

Choices

Choice (4)Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

d.

Ꭺ is true but Ꭱ is false

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