Digital Circuits [GATE (Graduate Aptitude Test in Engineering) Electronics]: Questions 177 - 181 of 271

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Question 177

Digital Circuits
Sample and Hold Circuits, ADCs and DACs

Appeared in Year: 2013 (UGC-NET)

Question

Assertion-Reason▾

Assertion(Ꭺ)

R-2R ladder type D/A converter has a higher speed of conversion than a weighted resistance D/A converter. (June)

Reason(Ꭱ)

R – 2R ladder type converter uses a smaller number of components than the weighted resistance D/A converter.

Choices

Choice (4)Response

a.

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

b.

Ꭺ is false but Ꭱ is true

c.

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

d.

Ꭺ is true but Ꭱ is false

Question 178

Digital Circuits
Boolean Algebra, Minimization of Functions

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

Which logic function has the output low only when both inputs are high? (June)

Choices

Choice (4)Response

a.

OR

b.

NAND

c.

NOR

d.

AND

Question 179

Digital Circuits
Architecture

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

1 K memory device contain (June)

Choices

Choice (4)Response

a.

512 memory cells

b.

1064 memory cells

c.

640 memory cells

d.

1024 memory cells

Question 180

Digital Circuits
Memory and I-O Interfacing

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

What is SIM? (June)

Choices

Choice (4)Response

a.

Sorting Interrupt Mask

b.

Set Interrupt Mask

c.

Select Interrupt Mask

d.

Start Instruction Mode

Question 181

Digital Circuits
Architecture

Appeared in Year: 2013 (UGC-NET)

Question

MCQ▾

In a 8085 microprocessor, the resistor which holds address of the next instruction to be fetched is

Choices

Choice (4)Response

a.

Instructor Register

b.

Stack pointer

c.

Program counter

d.

Accumulator

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