Jawaharlal Nehru Technological University Hyderabad 2010-1st Sem M.C.A Code No: 21002 -ester Supplementary s COMPUTER ORGANIZATION - Question Paper

Code No: 21002
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
MCA-I Semester Supplementary exams July 2010
COMPUTER ORGANIZATION
Time: 3hours Max.Marks:60
ans any 5 ques.
All ques. carry equal Marks
- - -
1.a) Using an SR flipflop design a D kind flipflop.
b) Draw a combinational circuit using only NAND gates to generate the Boolean
function:
F(A,B,C,D) = A BC + B C + CD + AC D
Derive the relations used, if any, to draw the circuit.
2.a) With the help of a block diagram discuss the operation of a eight bit serial in-parallel
out shift registers. Suggest 1 application for such a register.
b) Construct a five to 32 line decoder with needed number of three to eight line decoders and
2 to four line decoders. Use block diagram approach and discuss the function of the
5 to 32 line constructed by you.
3.a) What do you understand by normalization of a floating point number? discuss
with an example.
b) Write down a 4 bit BCD code and 4 bit gray code and discuss their relevant
features.
4. The eight bit registers AR, BR, CR and DR have the subsequent initial values.
AR = 11011010
BR = 11100101
CR = 10101010
DR = 11111110
Determine the contents of every of the registers after execution of the subsequent
sequence of micro operations.
AR ? AR – DR…………………...subtract DR from AR
BR ? CR + BR…………………...add BR to CR
CR ? CR + 1; CR? CR ^ BR…...increment CR, and the contents CR and BR.
5. discuss the Booth's algorithm for signed two's complement numbers with the
help of a block diagram. provide a numerical example of implementation of Booth's
algorithm with five bit number.
6. Write a brief notes on the different addressing modes used in a computer with
simple examples.
7.a) The logical address space in a computer system consists of 128 segments. every
segment can have upto 32 pages of 4k words in every. Physical memory consists
of 4k blocks of 4k words in every. Formulate the logical and physical address
formats.
b) List out the parameters needed to be taken / considered for choosing a memory
device. discuss 3 such parameters in detail.
8.a) discuss in detail the necessity of an input output interface ranging from a CPU and
peripheral device.
b) Write brief notes on input output processor.
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NR

Earning:   Approval pending.