Cambridge Professional English Infotech English for computer users Fourth Editiorf

Switches come in many shapes and sizes. They are operated by muscle movements or breath control. For example, a pneumatic switch - known as a sip and puff

• 
  allows someone with quadriplegia to control the PC by puffing and sipping air through a pneumatic tube. People with quadriplegia can also use sip and puff joysticks.
  

Finally, there's voice recognition, which allows the computer to interpret human speech, transforming the words into digitized text or instructions.

A specialized keyboard for children with physical disabilities



В Complete the crossword with words from the text on pages 43-44.
ACROSS
.
2 An.
keyboard presents a
graphic representation of a keyboard on the desktop screen and allows people with mobility impairments to type data using a joystick or a pointing device.
Visual allow deaf users to be
notified of incoming mail or error messages without hearing a tone.
A screen makes the computer
screen more readable for users with poor vision.
A system of reading and writing using raised dots, which enables blind people to read by touch.

. has a

• I»J

Noun phrases

adjective present participle 's genitive noun


DOWN

1. 
   Unlike a standard telephone, a.
   

small screen and a keyboard that transcribes a spoken voice as text. It is used for text communication via a telephone line, ideal for people who have hearing or speech difficulties.

3. 
   A Braille is an impact printer that prints
   

text as Braille, by punching dots onto paper.

5. 
   A speech synthesizer is used in conjunction with a
   

screen to convert screen contents into
spoken words.
Language work: noun phrases
A Look at the HELP box and then the noun phrases 1-6. Decide what type of modifier (a-d) is placed before the 'head' in each case.

Infotech 1
Computers today 20
unit з Inside the system 35
Technical specifications 35
What is inside a PC system? 36
Language work: defining relative clauses 42
How memory is measured 45
A PC system 47
6 Your ideal computer system 49
unit4 Buying a computer 55
Vocabulary tree 62
Recommending a computer 62
unit 5 Type, click and talk! 68
Interacting with your computer 68
Describing input devices 68
Describing functions and features 70
The keyboard 75
Mouse actions 76
6 Speech recognition systems 77
The eyes of your computer 78
Facts and opinions 79
Language work: superlatives 80
Language work: suffixes 81
Press release: a digital camera 31
Describing a camera 31
Your computer screen 32
How screen displays work 32
Ergonomics 37
Language work: instructions and advice 37
An ergonomic school or office 38
nit8 Choosing a printer 38
Language work: connectors 1 41
Choosing the right printer 41
Multi-function printers 42
Language work: comparatives 42
6 Reading quiz - printer adverts 43
unit 9 Devices for the disabled 44
Assistive technology 44
Computers for the disabled 45
Language work: noun phrases 48
Assistive technologies for the blind 53
Investing in assistive technologies 53
Storage devices 54
Types of magnetic drive 55
Unit 10 Magnetic storage 55
Buying a portable hard drive 55
Magnetic storage 56
Language work: precautions 57
Word building 58
Explaining hard drive precautions 58
CDs and DVDs 57
unit и Optical storage 57
Optical discs and drives 57
Language work: connectors 2 61
Choosing storage devices 55
Format wars 56
unit i2 Flash memory 57
Flash-based gadgets 57
Memory in a flash! 58
Language work: word building 70
Describing flash drives 74
Vocabulary revision 61
Windows Vista 65
Language work: countable and uncountable nouns 67
Writing a summary 69
unit i4 Word processing (WP) 70
Word processing features 70
Word Sudoku 72
The Cut and Paste technique 73
Language work: giving and following instructions 74
WP tools 75
Spreadsheets and databases 77
Spreadsheet programs 77
An invoice, a business letter and a fax 79
Databases 80
Language work: plurals 85
Software at home and at work 85
unit i6 The Internet and email 88
Internet basics 88
Internet FAQs 88
Email features 93
Unit 17 The Web 88
The collectives of cyberspace 90
Language work: collocations 2 92
E-commerce and online banking 94
Language work: the prefixes e- and cyber- 97
What do you use the Web for? 101
unit is Chat and conferencing 89
Netiquette 91
R и free 4 a chat? 91
At a cybercafe 94
Plan your own cybercafe 94
unit i9 Internet security 95
On alert 95
Security and privacy on the Internet 95
Safety online for children 104
!■ The history of hacking 108
Language work: the past simple 113
6 Internet issues 118
Creative software 119
unit20 Graphics and design 120
Computer graphics 120
Language work: the -ing form 124
The toolbox 126
Choosing graphics software 128
Describing graphics 128
unit2i Desktop publishing 130
What is desktop publishing? 130
Language work: order of adjectives 131
Steps in a DTP publication 111
Writing a letter 108
E-publishing versus paper publishing 113
unit22 Multimedia 110
1 Multiple forms of media 110
Components and system requirements 110
Multimedia magic! 111
Language work: conditional sentences 113
Applications of multimedia 115
unit23 Web design 116
A typical home page 116
2Web page design 116
Language work: modal verbs 116
Designing a website 117
unit24 Program design and computer languages 121
Programming 121
Steps in programming 121
Computer languages 122
Word building 123
Language work: the infinitive 127
Visual BASIC and VoiceXML 128
Java applets 129
The Java language 126
Language work: the -ed form 131
Your experience with computers 133
Unit 26 Jobs in ICT 134
IT professionals 134
Job advertisements 134
A letter of application 130
A job interview 131
Language work: the present perfect 132
6 Applying for a job 137
Computers tomorrow 138
unit27 Communication systems 143
Information and communications technologies (ICT) 143
Language work: the passive 139
VoIP technology 142
Mobile phones 142
SQO 144
unit 28 Networks 140
Small networks 140
Networking FAQs 145
Language work: phrasal verbs 147
WANs and satellites 148
unit29 Videogames 150
Game platforms 150
Game genres 151
Game genres 151
Language work: adverbs 147
Present and future trends in gaming 148
The pros and cons of gaming 149
unit зо New technologies 150
rO 150
RFID tags 152
3Language work: future forms 154
Making predictions 156
Appendix: a model CV 159
Glossary 159
Irregular verbs 171
Acronyms and abbreviations 173

1. 
   voice-activated computer
   
2. 
   pointing device