VTU Computer Science (Semester 4)
Computer Organization
June 2015
Total marks: --
Total time: --
INSTRUCTIONS
(1) Assume appropriate data and state your reasons
(2) Marks are given to the right of every question
(3) Draw neat diagrams wherever necessary


1 (a) With a neat block diagram, explain the different processor registers.
8 M
1 (b) List and explain the technological features and devices improvement made during different generations of computers.
8 M
1 (c) What are the factors that affect the Performance? Explain any four.
4 M

2 (a) What is an addressing mode? Explain any four addressing modes, with an example for each.
8 M
2 (b) Explain shift and rotate operations with example.
8 M
2 (c) Explain Big-endian and Little-endian method of byte addressing with an example.
4 M

3 (a) Define Exceptions. Explain two kinds of exceptions.
4 M
3 (b) Define bus arbitration. Explain in detail any one approach of bus arbitration.
8 M
3 (c) Draw and explain the general 8 bit parallel processing.
8 M

4 (a) Explain the following with respect to USB:
i) USB Architecture
ii) USB Addressing
iii) USB Protocols.
9 M
4 (b) Briefly discuss the main phases involved in the operation of SCSI bus.
6 M
4 (c) Explain distributed Bus arbitrations.
5 M

5 (a) Define: i) Memory Latency ii) Memory bandwidth iii) Hit-rate iv) Miss-Penalty.
4 M
5 (b) Explain the different cache mapping functions.
10 M
5 (c) Explain any one feature of memory design that leads to improvement performance of computer.
6 M

6 (a) With a neat diagram, explain the virtual memory organization.
8 M
6 (b) Design a logic circuit to perform addition/Subtraction of two 'n' bit numbers X and Y.
4 M
6 (c) Explain Booth Algorithm. Apply Booth Algorithm to multiply the singed numbers +13 and -6.
8 M

7 (a) Explain the different arithmetic operations on floating point numbers.
6 M
7 (b) Perform division of number 8 by 3 (8÷3) using the restoring division algorithm.
6 M
7 (c) Explain the process of fetching a word from memory along with a timing diagram.
8 M

8 (a) Briefly explain the structure of General Purpose Multiprocessor.
8 M
8 (b) List different types of Networks. Explain any four.
8 M
8 (c) Give a brief description on performance consideration with an example.
4 M



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