Tribhuwan University

Institute of Science and Technology

2078

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.
Explain the components of SAP 1 computer with its block diagram. How is it different from SAP 2 computer?[10]
2.
What are different types of instructions available in 8085 microprocessor? Write a program to find smallest element of an array: (Assume all the necessary data and memory location).[10]
3.
Explain the instruction format of basic computer. Differentiate between RISC and CISC computer.[10]
Section B

Short Answers Questions

Attempt any Eight questions.
[8*5=40]
4.
Explain arithmetic micro-operations with suitable examples [5]
5.
What is micro-program? Write symbolic microprogram for FETCH operation. [5]
6.
Explain hardware implementation and algorithm for subtraction and addition of signed magnitude data with suitable diagram. [5]
7.
Explain about memory hierarchy in computer. [5]
8.
Explain the basic architecture of microprocessor based system. [5]
9.
What is flag? What are different flags available in 8085 microprocessor? [5]
10.
Explain arithmetic pipeline with suitable example. [5]
11.
What is the function of I/O interface? Differentiate between Isolated I/O and memory mapped I/O. [5]
12.
Write short notes one (among three attempt only two): a.) Control ROM Write short notes on : b.) Magnetic Disk Write short notes on : c.) Flynn's Classification [2.5+2.5+2.5]