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LOYOLA COLLEGE (AUTONOMOUS), CHENNAI 600 034
M.C.A. DEGREE EXAMINATION COMPUTER APPLICATIONS
FIRST SEMESTER NOVEMBER 2017
CA 1807 COMPUTER ORGANIZATION ARCHITECTURE
Date: 07-11-2017 Dept. No. Max. 100 Marks
Time: 01:00-04:00
PART-A
Answer ALL the questions 10*2=20
Write the truth table for OR gate.
What are combinational circuits?
Mention the methods of simplifying Boolean expression.
Write a note on flip flops.
Write a note on register.
What is a program counter?
Why is an interface required between CPU and peripherals?
What is DMA?
List out the replacement algorithms employed in cache memory.
10) Mention the basic components of a memory management unit.
PART-B
Answer ALL the questions 5*8=40
11) Describe subtractors with neat diagram.

Explain encoder with diagram.
12) Give a detailed description on shift registers.

Obtain the Truth Table and Logic Diagram for the following function:
F
13) Explain general register organization.

Describe shift microoperations.
14) Explain arithmetic pipeline.

Explain Daisy Chaining.
15) Elucidate RAM chip.

Explain crossbar switch and multistage switching network with diagrams.
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PART-C
Answer ANY TWO Questions. 2*20=40
16) Answer the following:
Adders with neat diagram.
Any two flip flops with a neat diagram.
17) Explain the following with required figures:
Control unit.
Any five addressing modes.
18) Give a detail explanation on:
Handshake in asynchronous data transfer.
Virtual Memory.