Cambridge IGCSE Computer Science
Cambridge University Press 978-1-107-69634-1 ? Cambridge IGCSE? Computer Science Revision Guide David Watson, Helen Williams Frontmatter More information
Cambridge IGCSE?
Computer Science
Revision Guide
David Watson and Helen Williams
? in this web service Cambridge University Press
Cambridge University Press 978-1-107-69634-1 ? Cambridge IGCSE? Computer Science Revision Guide David Watson, Helen Williams Frontmatter More information
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Cambridge University Press 978-1-107-69634-1 ? Cambridge IGCSE? Computer Science Revision Guide David Watson, Helen Williams Frontmatter More information
Contents
Introduction
vi
Chapter 1 Introduction to Computer Science
1
1.1 An overview of chapters 2 to 12
1
1.2 Components of a typical computer system
2
Chapter 2 Computer applications
5
2.1 Computer interfaces
5
2.2 Communication systems
6
2.3 Monitoring and control of processes
11
2.4 Robotics
16
2.5 End of chapter questions
17
Chapter 3 The Internet
19
3.1 The Internet
19
3.2 Broadband and dial up
22
3.3 Recent developments
23
3.4 Intranets
29
3.5 End of chapter questions
30
Chapter 4 Security aspects
32
4.1 Security and data integrity
32
4.2 Other ways data can be lost or corrupted
35
4.3 Spam and cookies
36
4.4 Firewalls and proxy servers
36
4.5 Secure sockets layer (SSL)
38
4.6 Transport layer security (TLS)
39
4.7 Encryption
39
4.8 Online safeguards
41
4.9 End of chapter questions
43
Chapter 5 Programming languages and programming
45
5.1 High and low level programming languages
45
5.2 Turtle graphics
48
? in this web service Cambridge University Press
Cambridge University Press 978-1-107-69634-1 ? Cambridge IGCSE? Computer Science Revision Guide David Watson, Helen Williams Frontmatter More information
Cambridge IGCSE Computer Science Revision Guide
5.3 Programming concepts 5.4 Data structures arrays 5.5 Databases 5.6 End of chapter questions
Chapter 6 Flowcharts
6.1 Structure diagrams, top down design, menus, library routines and subroutines
6.2 Common flowchart symbols 6.3 Problem solving using flowcharts 6.4 Dry running of flowcharts (trace tables) 6.5 End of chapter questions
Chapter 7 Pseudocode
7.1 Pseudocode 7.2 Solving problems using pseudocode 7.3 End of chapter questions
Chapter 8 Logic gates
8.1 Logic gates 8.2 Truth tables 8.3 Logic circuits/networks 8.4 End of chapter questions
Chapter 9 Computer ethics
9.1 Computer ethics 9.2 Free software, freeware and shareware 9.3 End of chapter questions
Chapter 10 Data systems
10.1 Data capture techniques 10.2 Validation techniques 10.3 Verification techniques 10.4 Binary systems 10.5 Hexadecimal systems 10.6 End of chapter questions
Chapter 11 Hardware
11.1 Features of laptop and desktop computers 11.2 Household appliances 11.3 Input and output devices 11.4 Memory, storage devices and media 11.5 End of chapter questions
iv
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50 53 55 58
64
64 67 68 73 78
85
85 87 90
93
93 94 96 101
105
105 106 107
108
108 110 113 115 118 122
127
127 128 130 145 151
Cambridge University Press 978-1-107-69634-1 ? Cambridge IGCSE? Computer Science Revision Guide David Watson, Helen Williams Frontmatter More information
Chapter 12 Operating systems
12.1 12.2 12.3 12.4 12.5 12.6 12.7 12.8 12.9
Operating systems Interrupts Batch processing Real time transaction processing Real time process control Computer architecture Fetch?execute cycle Data transmission End of chapter questions
Chapter 13 Practice papers
13.1 Practice paper 1 13.2 Practice paper 2
Answers to questions Index
Contents
154
154 155 156 157 158 158 161 162 166
168
168 175
183 207
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