This document provides information about getting fully solved assignments for SMU BSC IT courses. It lists the semester, subject code, credit hours, and BK ID for an example Computer Organization and Architecture assignment. It also provides answers to 6 questions related to microoperations, computer bus structure, instruction formats, ten's complement, memory mapping, and interrupt-driven I/O. Students are instructed to send their semester and specialization to a email address or call a phone number to receive solved assignments.

1. Dear students get fully solved SMU BSC IT assignments
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ASSIGNMENT
PROGRAM BSc IT
SEMESTER SECOND
SUBJECT CODE & NAME BT0068, Computer Organization and Architecture
CREDIT 4
BK ID B0952
MAX.MARKS 60
1. Define microoperation and explain its types.
Answer:Incomputercentral processingunits,micro-operations(alsoknownas a micro-ops or μops)
are detailedlow-level instructionsusedinsome designstoimplementcomplex machine instructions
(sometimes termed macro-instructions in this context).
Usually, micro-operations perform basic operations on data stored in one or more registers,
includingtransferringdatabetweenregistersorbetweenregistersandexternal buses of the central
processingunit(CPU),andperformingarithmeticorlogical operationsonregisters.Inatypical fetch-
decode-execute cycle, each step of a
2. Describe bus in computer system and explain its structure.
Answer: In computer architecture, a bus is a subsystem that transfers data between components
inside a computer, or between computers. Early computer buses were literally parallel electrical
wires with multiple connections, but Modern computer buses can use both parallel and bit serial
connections.

2. Single bus structure
To achieve a reasonable speed of operation, a computer must be organized so that all its units can
handle one full word of data at a given time. When a word of data is transferred between units, all
itsbitsare transferredinparallel,thatis,the bitsare transferredsimultaneouslyovermanywires, or
lines, one bit per line. A group of lines that serves
3.Explain the simple instruction format with diagram and examples.
Answer:Computerinstructionsare the basiccomponentsof amachine language program.Theyare
alsoknownas macrooperations,since eachone iscomprisedof asequencesof microoperations.
Each instructioninitiatesasequence of microoperationsthatfetchoperandsfromregistersor
memory,possiblyperformarithmetic,logic,orshift operations,andstore resultsinregistersor
memory.
Instructionsare encodedasbinary instr
4. Explain infinite-precision and finite-precision ten's complement.
Answer: Infinite-precision ten's complement
Imagine the odometerof anautomobile.Ithasa certainnumber of wheels, each with the ten digits
on it. When one wheel goes from 9 to 0, the wheel immediately to the left of it, advances by one
position. If that wheel already showed 9, it too goes to 0 and advances the wheel to its left, etc.
Suppose we run the car backwards. Then the reverse happens, i.e. when a wheel goes from 0 to 9,
the wheel to its left decreases by one.
5. Explain the mapping functions between the main memory and CPU.
Answer: The main memory of the computer is also known as RAM, standing for Random Access
Memory. It is constructed from integrated circuits and needs to have electrical power in order to
maintainitsinformation.Whenpowerislost,the information is lost too! It can be directly accessed
by the CPU. The access time toread or write anyparticularbyte are independent of whereabouts in

3. the memorythat byte is,and currently is approximately 50 nanoseconds (a thousand millionth of a
second).Thisisbroadlycomparable withthe speedat which the CPU will need to access data. Main
memoryisexpensive comparedtoexternal memorysoithas limitedcapacity.The capacityavailable
for a givenprice isincreasingall the time.Forexample manyhome Personal Computers now have a
capacity of 16 megabytes (million bytes), while 64 megabytes is commonplace on commercial
workstations. The CPU will normally transfer data to and from the main memory in groups of two,
four or eight bytes, even if the operation it is undertaking only requires a single byte.
Caching configurations continue to evolve, but memo
6. Explain interrupt and interrupt driven I/O.
Answer:Aninterruptisa signal from a device attached to a computer or from a program within the
computerthat causesthe mainprogram that operatesthe computer(the operating system ) to stop
and figure outwhatto do next.Almostall personal (orlarger) computerstodayare interrupt-driven-
that is, they start down the list of computer instruction s in one program (perhaps an application
such as a wordprocessor) andkeeprunningthe instructionsuntileither(A) theycan'tgo any further
or (B) an interrupt signal issensed.Afterthe interruptsignalissensed,the computereither resumes
running the program it was running or begins running another program.
Basically,asingle computercanperformonlyone computerinstructionatatime.But,because it can
be interrupted, it can take turns in which programs or
Dear students get fully solved SMU BSC IT assignments
Send your semester & Specialization name to our mail id :
“ help.mbaassignments@gmail.com ”
or
Call us at : 08263069601