Download JNTUH (Jawaharlal nehru technological university) MCA (Master of Computer Applications) 1st Sem (First Semester) Regulation-R17 2020 November 841AB Computer Organization Previous Question Paper
S OCT 2020
R17
Code No: 841AB
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA I Semester Examinations, October/ November - 2020
COMPUTER ORGANIZATION
Time: 2 Hours
Max.Marks:75
Answer any five questions
All questions carry equal marks
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1.
Simplify the following Boolean function in product-of-sums form by means of a four-
variable map. Draw the logic diagram with (a) OR-AND gates (b) NOR gates
F(w, x, y, z) = (2,3,4,5,6,7,11,14,15)
[7+8]
2.
With help of a detailed example, illustrate the effects of different cache mapping
techniques.
[15]
3.
Describe the architecture of 8086 and explain the need of code segment and extra
used
segment.
[15]
4.
What is the difference between isolated I/O and memory mapped I/O? What are the
advantages and disadvantages of each?
[15]
5.
Compare centralized and distributed inter processor arbitration logic for multi processor
systems.
[15]
6.
Construct a 5-to-32-line decoder with four 3-to-8 line decoders with enable and one
2-to-4-line decoder. Explain your circuit functionality.
[15]
7.a)
How many 128 ? 8 RAM chips are needed to provide a memory capacity of
2048 bytes.
b)
How many lines of the address bus must be used to access 2048 bytes of memory? How
many of these lines will be common to all chips?
[7+8]
8.
Write an assembly language program using subroutine to display factorial of a given
number. Trace your program for input `4'.
[15]
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This post was last modified on 16 March 2023