CSIT 2nd Semester
Microprocessor Board Question Paper 2081 Old Course

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CSC 167-2081 ✡

Tribhuvan University

Institute of Science and Technology

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Bachelor Level/First Year/Second Semester/Science
Bachelors in Computer Science and Information Technology (CSC 167)
(Microprocessor) <br> <b class="underline">(Old Course</b>)
Full Marks: 60 Pass Marks: 24 Time: 3 hours

Candidates are required to give their answers in their own words as far as practicable.
The figures in the margin indicate full marks.

Section A
Long Answer Questions
Attempt any Two questions.
[2x10=20]
1.

What is the significance of addressing modes? Explain different types of addressing modes.

2.

Explain 80286 with respect to its logical block diagram and its segments.

3.

What do you understand my ALE? Explain the demultiplexing of address bus with a suitable example.

Section B

Attempt any Eight questions

[8×5=40]
4.

Explain the bus organization of 8085.

5.

Write an assembly program to find the largest number in an array. Make necessary assumptions.

6.

Explain the concepts of control signals for read operation from memory.

7.

Differentiate between PUSH and POP instruction with an example.

8.

Explain the timing diagram with an example of your own.

9.

Differentiate between LDT and GDT with their practical implications.

10.

What are the functions of 8259A? Explain.

11.

Explain the concepts of pipelining in 8086?

12.

Write short notes on:
a) Accumulator
b) Paging