BSc (hons) Computing and Information Systems
Introduction to Java and Object Oriented
Programming (Volume One)
Written by Sebastian Danicic, Department of Computing Science, University of London.
First published 2002
This edition publ
Part One an Overview of Computer Systems
Chapter 1 Computers and systems
PROTOCOLS: standard agreement which network interfaces must conform to.
IPO (INPUT-PROCESS-OUTPUT) MODEL:
INDIVIDUAL COMPUTER SYSTEMS consist of processing hardware, input devices, o
CN4104 Introduction to Computer Systems & Networks
Topic 2- Number Systems
What is the base of a number system?
Number of different digits including zeros that exist in number system.
What is the base of the:
Topic 1 - Module Introduction & Overview - Week 1
This topic aims to provide you with an outline of the module and to introduce you to the main
components of computer systems.
The following topics will be addressed:
o a module introduction and overview
Chapter 6 The little man computer
We will refer to the steps that the Little Man takes to perform an instruction as the instruction cycle.
This cycle, which is similar for all the instructions, can be broken into two parts:
Chapter 2 An introduction to system concepts and system architecture
Abstraction they are representations of systems and their components by models or drawings on
paper or objects within a computer program. They represent the real system but are
Chapter 7 The CPU and Memory
CPU (central processing unit) made up of 3 components:
ALU (arithmetic/logic unit) The arithmetic/logic unit is the component of the CPU where data
is held temporarily and where calculations take place. It correspond
Chapter 1 Computers and Systems
Application programming interface (API) acts as an interface for application programs and utilities
to access the internal services provided by the operating system. These include file services, I/O
Chapter 4 Data Formats
A-to-D converter analog-to-digital converter (converts sound/audio to binary).
alphanumeric data The data entered as characters, number digits, and punctuation. Three
alphanumeric codes are in common use; Unicode, ASCII (Am
Chapter 5 Representing numerical data
binary-coded decimal (BCD) the number is stored as a digit-by-digit binary representation of the
original decimal integer. Each decimal digit is individually converted to binary. This requires 4 bits