Computer Organization and Architecture-Machine Instructions and Addressing Modes [GATE (Graduate Aptitude Test in Engineering) Computer Science]: Questions 1 - 6 of 64

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Question 1

Question MCQ▾

The ALE line of an 8085 microprocessor is used to?

Choices

Choice (4)Response

a.

Executes the instruction supplied by external device through the INTA signal

b.

Executes a NOP

c.

Executes an instruction from memory location 20 H

d.

Execute an RST by hardware

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Question 2

Question MCQ▾

Which of the following is the largest manufacturer of Hard Disk Drives?

Choices

Choice (4)Response

a.

3M

b.

Micromax

c.

IBM

d.

Seagate

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Question 3

Appeared in Year: 2015

Question MCQ▾

What will be the output at PORT1 if the following program is executed?

  1. MVIB, 82H
  2. MOVA, B
  3. MOVC, A
  4. MVID, 37H
  5. OUTPORT1
  6. HLT

Choices

Choice (4)Response

a.

B9H

b.

37H

c.

00H

d.

82H

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Question 4

Appeared in Year: 2016

Question MCQ▾

The content of the accumulator after the execution of the following 8085 assembly language program, is:

  1. MVIA, 42H
  2. MVIB, 05H
  3. UGC:ADDB
  4. DCRB
  5. JNZUGC
  6. ADI25H
  7. HLT

Choices

Choice (4)Response

a.

82 H

b.

47 H

c.

76 H

d.

78 H

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Question 5

Appeared in Year: 2016

Question MCQ▾

Which of the following in 8085 microprocessor performs

Choices

Choice (4)Response

a.

DAD SP

b.

DAD H

c.

DAD D

d.

DAD B

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Question 6

Appeared in Year: 2011

Question MCQ▾

CPU does not perform the operation (December Paper II)

Choices

Choice (4)Response

a.

arithmetic operation

b.

data transfer

c.

logic operation

d.

None of the above

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