GATE (Graduate Aptitude Test in Engineering) Electronics: Questions 31 - 34 of 1076

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Question 31

Appeared in Year: 2003

Question

MCQ▾

A 0 to 6 counter consists of 3 flip flops and a combination circuit of 2 input gate. The common circuit consists of

Choices

Choice (4)Response

a.

One AND gate

b.

One OR gate

c.

One AND gate and one OR gate

d.

Two AND gates

Question 32

Appeared in Year: 2011

Question

MCQ▾

An 8085 assembly language program is given below. Assume that the carry flag is initially unset. The content of the accumulator after the execution of the program is

  1. MVIA, 07H
  2. RLC
  3. MOVB, A
  4. RLC
  5. RLC
  6. ADDB
  7. RRC

Choices

Choice (4)Response

a.

64H

b.

8CH

c.

15H

d.

23H

Question 33

Appeared in Year: 2002

Question

MCQ▾

Consider the following assembly language program

  1. MVIB, 87H
  2. MOVA, B
  3. START:JMPNEXT
  4. MVIB, 00H
  5. XRAB
  6. OUTPORT1
  7. HLT
  8. NEXT:XRAB
  9. JPSTART
  10. OUTPORT2
  11. HTL

Choices

Choice (4)Response

a.

Infinite looping of the program execution with accumulator data alternating between 00H and 87 H.

b.

The execution of above program in an 8085 microprocessor will result in an output of 87 H at PORT 1

c.

An output of 87 H at PORT 2

d.

Infinite looping of the program execution with accumulator data remaining at 00H.

Question 34

Appeared in Year: 2005

Question

MCQ▾

Consider an 8085 microprocessor system. The following program starts at location 0100H.

  1. LXISP, OOFF
  2. LXIH, 0701
  3. MVIA, 20H
  4. SUBM

If in addition following code exists from 019H onwards,

  1. ORI40H
  2. ADDM

What will be the result in the accumulator after the last instruction is executed?

Choices

Choice (4)Response

a.

42 H

b.

20 H

c.

40 H

d.

60 H

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