Questions
Syllabus
Qns. By Syllabus

Semester

Subject

Year

Tribhuwan University

Institute of Science and Technology

2080

Bachelor Level / First Year / Second Semester / Science

Bachelors in Information Technology (BIT151)

(Microprocessor and Computer Architecture)

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.
What is Addressing Modes? Explain each with example. Explain the function and type of addressing mode with reason of instructions STA 4000H.[10]
2.
What is control unit of microprocessor? Draw the block diagram of the hardwired control unit and explain the function of each unit in brief.[10]
3.
What is pipelining? Define instruction pipeline and explain the four segment instruction pipeline.[10]
Section B

Short Answers Questions

Attempt any Eight questions.
[8*5=40]
4.
What is Microprocessor? What are 3 general categories of the function of microprocessor? Explain in brief. [5]
5.
Write 8085 assembly language to add two numbers located at 2030H and 2040H. Store the sum in the address 2050H. [5]
6.
Design a 4-bit combinational circuit decrementer (A1 $\gets$ A1 - 1) using four full-adder circuits. Explain the circuit. [5]
7.
What is selective set logical operation? Draw the hardware circuit of selective set logical operation. [5]
8.
Show the step-by-step division process using Restoring Division Algorithm of 194 $\div $ 10) (AQ= 10100011 by B=1011). [5]
9.
Explain the difference between isolated I/O and memory-mapped I/O? What are the advantages and disadvantages of each? [5]
10.
What is Virtual Memory? Explain in brief. [5]
11.
What do you understand by microprogrammed control computer? Explain main memory and control memory of microprogrammed controlled Computer. [5]
12.
Write short notes one a.) Performance of a pipelined processor Write short notes one b.) Page Replacement [2.5+2.5]