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C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
C.Sc. 110 Computer Science
113: Computer Systems
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
First Year Structure
• The 1st year consists of four courses:• 111: Software Design• 112: Programming in Java• 113: Computer Systems• 114: Applications and Implications of IT
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Aims of the Systems Course
• To introduce the features and components of computer systems.
• To provide you with an understanding of the relationship between applications software, systems software and hardware.
• To provide a basis for more detailed courses next year and a useful set of skills for non-majors.
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Course Structure
• Course runs for two terms and is split into:• Computer Architecture
• Operating Systems
• Each part is subdivided into topics.
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Course Structure .. Architecture
• Topic 1 : Introduction - 1 lecture• course structure• book details• assessment information• basic computer concepts• basic architecture and system software
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Course Structure .. Architecture
• Topic 2 : Building a computer - 2 lectures• information representation• computer logic• components of a computer
• Topic 3 : Controlling the computer - 3 lectures• microinstructions• machine languages• assembly languages
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Course Structure .. Architecture
• Topic 4 : I/O Devices and Networks- 3 lectures• I/O devices• Interrupts and device control techniques• Support for computer networks
• Topic 5 : Performance - 1 lecture• Computer Performance
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Book Details
Computer Science: A Modern Introduction(Second Edition)
Les Goldschlager and Andrew Lister
Prentice Hall £22.95
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Lecture Material
• The slides are available on the Department Intranet.
• http://info.comp.lancs.ac.uk/• http://www.comp.lancs.ac.uk/computing/
staff/kc/keiths_teaching.html• You can take copies of these slides from
any machine but note that the files are big.
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Also ...
• All of the notes for CSc 113 areavailable on CD-ROM.
• The discsare in thelibrary in short loan.
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Lecture Material
• The slides are available on the Department Intranet.
• You can take copies of these slides from any machine but note that the files are big.
• Summary sheets will be provided at the end of each term.
• There are no printed notes - you should take your own.
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Assessment and Coursework
• Exam at the end of the first year.• Written exercises (roughly one per term).• Tutorial discussion material.
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Term 1 : Computer Architecture
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Topic 1 : Introduction
Basic Concepts
Reference : G & L pp 1 -12
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Concepts and Terminology
• Key concepts in computing
• Memory
• Processor
• Program or Algorithm
• I/O device
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Jack and Jill
• Jack and Jill are found lying dead on the floor. Around them are fragments of broken glass and a small pool of water. What killed them ?
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
while list isn’t sorted into ascending order do ...
start with the first element (box)
repeat the next set of instructions
if contents of this box > that of next box
then swap contents of these boxes
consider the next element (box)
until end of list is reached
end while
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
A Program To Sort Numbers
Finished
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Concepts and Terminology
• Key concepts in computing• Memory• Processor• Program or Algorithm• I/O device
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Basic Computer Architecture
• The components of a computer are connected together via one or more buses.
Memory CPU I/O Devices
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
The Software-Hardware Hierarchy
Applications Software (e.g. packages)
System Software (e.g. operating systems)
Computer Hardware (e.g. CPU, memory, I/O devices)
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
System Software
• Examples of system software• operating systems• editors• compilers and interpreters
• Examples of application software• statistics packages• drawing tools• word processors
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Summary
• Covered the course structure.• Demonstrated the basic computer concepts
of memory, programs, processors and i/o devices.
C.Sc. 110: Computer SystemsC.Sc. 110: Computer Systems
Coming Next Week
• Topic 2 : How to Build a Stored Program Computer
• Reference : G & L pp 143-147
