CSE305_L1_11_09_11_Sun
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Computer Architecture
Lecture – 1
Computer Organization and Design (third
edition)
David A. Patterson
John L. Hennessy
Computer Organization (fifth edition)
Carl Hamacher
Zvonko Vranesic
Safwat Zaky
Class Lectures
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Computer Structure/Architecture
Operation of Instruction set Execution
Pipelining
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Maximum three class tests :
1. One will be in very usual way
2. One will be sudden (The easiest one, small
syllabus, no memorizing, but the date is
unknown to me too!!!)
3. If 60% of you(that is, 36) get 80% marks(32) in
above two class tests, only then 3rd class test will
be taken, which will be open material and the
hardest one!!
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
From this week to 6th Week.
Total class = 18 + 2 = 20
Total lecture <= 16
2+1 = 3 == ANOTHER WEEK!!! (kept in hand
unfortunately, due to the political and
weather condition of Bangladesh)
Class time <= 40 minutes.
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Definition of C.A.:
The Architecture of a computer can be defined as
the design of the task-performing part of it.
It also includes the overall fundamental working1
principle of the internal logical structure2 of a
computer system.
So, computer architecture includes :
1. Instruction set architecture
2. Machine architecture
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Objectives of a Computer architect:
To select, design, interconnect and engineer
hardware components of various levels of
computer that meet functional performance and
programmability maintaining cost and availability
constraint.
So, the total coordination of abstract levels of a
processor under changing forces, involving
design, measurement and evaluation is within the
objectives of a computer architect.
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Instruction set architecture is the attributes
of a computing system as seen by the
assembly language programmer or compiler.
This includes :
Instruction Set (what operations can be
performed?)
Instruction Format (how are instructions
specified?)
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Data storage (where is data located?)
Addressing Modes (how is data accessed?)
Exceptional Conditions (what happens if
something goes wrong?)
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Machine organization is the view of the
computer that is seen by the logic designer.
This includes :
Capabilities & performance characteristics of
functional units (e.g., registers, ALU, shifters,
etc.).
Ways in which these components are
interconnected
How information flows between components
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Logic and means by which such information flow
is controlled
Coordination of functional units Typically the
machine organization is designed to meet a given
instruction set architecture.
However, in order to design good instruction
sets, it is important to understand the how
the architecture might be implemented.
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Functional Units :
A computer consists of 3 main functionally
independent units :
1. Input/output(I/O) unit
2. Memory
3. Processor
4/13/2015
The I/O unit and the processor is again subdivided into 2 parts.
Sumaiya Iqbal, Lecturer, CSE, BUET
The 2 parts of I/O unit :
1. Input
2. Output
The 2 parts of processor:
1. Arithmetic and Logic unit
2. Control unit
So, there are main 5 functional units of a
computer.
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Arithmetic
and
logic
Input
Memory
Output
Control
I/O
Processor
Functional units of a computer.
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET
Class Lecture
4/13/2015
Sumaiya Iqbal, Lecturer, CSE, BUET