Questions
Syllabus
Qns. By Syllabus

Semester

Subject

Year

Tribhuwan University

Institute of Science and Technology

2075

Bachelor Level / First Year / Second Semester / Science

B.Sc in Computer Science and Information Technology (CSC167)

(Microprocessor)

Full Marks: 60

Pass Marks: 24

Time: 3 Hours

Candidates are required to give their answers in their own words as for as practicable.

The figures in the margin indicate full marks.

Section A

Long Answers Questions

Attempt any TWO questions.
[2*10=20]
1.
Draw block diagram of 80286 and explain its functional units. [10]
2.
Explain instruction cycle, machine cycle and T-States. Draw timing diagram of STA instruction. Make necessary assumptions. [10]
3.
Write an assembly language program to find the smallest number in an array using 8 bit microprocessor, (assume appropriate array data and address where minimum array size of 15 should be considered.) [10]
Section B

Short Answers Questions

Attempt any Eight questions.
[8*5=40]
4.
Differentiate between vectored and non-vectored interrupts. Where and how 8259 PIC can be used to handle interrupts. [5]
5.
Explain the addressing modes of 8085 microprocessor with examples. [5]
6.
Write an ALP for 8086 to read a string and display the string in uppercase. [5]
7.
What is system bus? Explain different types of system bus in detail. [5]
8.
How DTE and DCE are wired using Rs-232 cables. Explain the process of double handshake I/O. [5]
9.
What is instruction set? Explain various kinds of instructions of 8085 microprocessor. [5]
10.
What is mean by memory interfacing? Explain the address decoding process in the 8085 microprocessor with 3 to 8 decoder. [5]
11.
Explain how pipelining is achieved in 8086 microprocessor. [5]
12.
Write short notes on:a) Von Neumann architecture b) Macro Assembler [5]