Find an IT term for each of these definitions. Each term includes one of the prefixes listed above. All of the terms are used in this book.

Word study

1. working at a distance

2. a system of numbers with 2 as its base

3. a way of communicating between a user and a computer

4. 1048576 bytes of information

5. describes a program which allows two way communication between user and computer

6. set of computer instructions operating as one unit

7. having many different modes of input

8. a computer higher in scale than any other

9. a machine which provides cash to bank customers without

requiring a human operator: an A ... Teller Machine

10. a very small but powerful processor

11. a system used by many people

12. a wordprocessing feature which corrects by itself

Verbs ending in -ise (US -ize) often have a causative meaning.

For example:

New phones will revolutionise the way we communicate.

= New phones will make a revolution in the way we communicate.

Replace the words in italics in each sentence with the appropriate

form of an -ise verb.

1. Players let you group songs into playlists and make the selection random.

2. If you adopt differential backup, this reduces to a minimum the size of your backup set.

3. Most hotels use systems which have been converted for computers.

A Software developers can produce solutions which are tailored to the customer.

0. Some software houses produce specially written applications.

1. Utilities can be put into categories as editors, filters or communications programs.

2. You can protect data by putting it in a form only users with authority can understand.

3. It is an offence to make copies of software which are done without authority.

   SPEAKING 9

What features should an electronic book reader have? In your group decide on the best specifications. Compare your list with the reader described on the recording and, if possible, with the specifications for the readers described at these websites:

www.franklin.com

www.ebookcrossroads.com/ebook-readers.html

www.sony.com

m Now present your specifications to the rest of the class. Each member of your group should present some of the specifications with reasons for their choice.

Pairwork: Student A

• Workgroup server

• Dual Xeon 2.8GHz processor

• 800MHz FSB

• 2GB ECC DDR2 (400MHz) SDRAM (upgradeable to 8GB)

• 250GB 7200rpm SATA hard drive (upgradeable to 1TB)

• 19" TFT XGA (1024X768) flat panel monitor

• 48X CD-ROM drive

Your bank account

Funds are electronically transferred from cardholder's account into the host's account

UNIT 3

Bank's computer

Accesses information in cardholder's account

computer

Routes the

transaction request to the cardholder's bank

ATM merchant's computer

Cash is dispensed within seconds

Fig 3 ATM

Card inserted into ATM machine

Encoded magnetic strip on card and PIN number verify the user identity and account

Merchant's bank account

Funds for all transactions are transferred to the merchant the following day

Host's bank account

Once funds are received authorisation is sent to the machine to dispense cash

UNIT 6

Mac OS The graphically-oriented operating system used on Apple Macintosh microcomputers. The latest version is MAC OS X.

MVS, VM, 0S/390 An operating system used on IBM mainframes.

NetWare An operating system that was widely used on local area networks (LANs) but is losing popularity.

Linux An operating system that was derived from Unix and is available as freeware.

Windows XP Microsoft Corporation's operating system for PCs.

reviews

Counter-Strike: Condition Zero

PC | Valve/Vivendi I Universal Games i ★★★★

Counter-Strike is the world’s favourite online game - it sold 1.5m copies, and introduced the concept of co-operative multiplay to an audience of hardcore gamers.

Condition Zero is the first major update to Counter-Strike and, although it offers more to those who wish to play it alone rather than online, it should still prove enormously popular. When played online, the primary improvement concerns the graphics. A number of detailed changes to weaponry, new maps and so on have been introduced. Players might find it disappointingly similar to the original.

But Condition Zero marks Counter-Strike’s emergence as a credible single-player game, thanks to the introduction of Al-controlled “bots”. You can play full-blown multiplayer- style games by picking a team of bots and fighting enemy bots, or work through an 18- mission single-player campaign and, as you progress, upgrade your team with improved Al- controlled team-mates.

Condition Zero’s single­player mode offers a good way of acquiring the skills to prosper in competitive online first person shoot-’em ups.

Steve Boxer

Explain to your partner with the help of these notes what DVD disks are, how DVD disks store such large quantities of information and how that information is read.

DVD = Digital Versatile Disk

• can hold complete movie

• like CD in size and thickness

• but CD drives use red laser light, DVD drives use blue

• blue laser has shorter wavelength therefore data can be denser

DVDs can be double-sided

• each side can have two layers

• top layer 4.7GB, bottom layer 3.8GB, total capacity = 17GB

• data transfer rate twice rate of CD-ROM

186 PAIRWORK Student A

UNIT 11

Asynchronous transmission

This method is also called start-stop transmission. In asynchronous transmission, data is sent one byte (or character) at a time. Each string of bits making up the byte is bracketed, or marked off, with special control bits. That is, a 'start' bit represents the beginning of a character, and a 'stop' bit represents its end. As a means of checking that the whole character has been

transmitted, an error check bit is generated immediately after each character.

Transmitting only one byte at a time makes this a relatively slow method. As a result, asynchronous transmission is not used when great amounts of data must be sent rapidly. Its advantage is that the data can be transmitted whenever it is convenient for the sender.

You want to brighten up your website.

1

2

3

4

You would like to reserve seats on the London to Edinburgh train.

You want some help with a project on computer security. You’re feeling a bit flabby and would like to take up marathon running. How can you prepare for this?

Weather Reports

Several weather-related sites can give you up-to-the-minute weather reports and precipitation radar for your city or local region or for an area in which you’ll be travelling.You’ll also find extended forecasts. Some weather sites provide safety tips for dealing with severe weather, w w vv. wea t h e r. com

Comic Strips

Everyone needs a laugh from time to time, and few things can put a smile on your face more quickly than a classic comic strip. You can check out dozens of your favourite comics and, in some cases, even send a comic strip to a friend, w\v \v. united media.co m w ww. uexp ress.co m

Maps

Websites can give you detailed street maps for major cities, or they can give you a map of Interstate highways. Some sites can help you find a particular address or suggest the best method of travel to your destination. You can also print maps at many websites. www.mapblast.com

Audio only

Synchronous

Asynchronous

Chat

Voicemail

Videoconferencing

Fig 2a World of connectivity

Asynchronous

email bulletin board

Problem A

UNIT 17

SYSTEM

Make and model

Dell, GS205X

Service Number

X3457

Processor

Pentium 4

Memory

256MB

O.S.

Windows XP

Configuration

standalone

Monitor power light flashing but display screen is completely blank.

SOLUTION
INSTRUCTIONS	RESULT
Check to see if the computer system unit power light comes on when the computer is switched on.	Computer power seems to be O.K.
Check that the monitor data cable is connected correctly to the VGA port at the rear of the computer.	Data cable is plugged in O.K.
Check that the graphics expansion card is installed properly by: Switching off the computer. Disconnecting the power cable. Opening the computer case by removing the four securing screws. Inspecting the graphics card to see if it is seated properly in the expansion slot.	Graphics card is loose.
Correct the fault and check the system by: Pushing the graphics card fully into the expansion slot. Replacing the casing. Reconnecting the power supply. Switching on the computer and checking that the monitor is functioning correctly.	Monitor functioning O.K.

z

UNIT 18

Getting the bug

How the simple yet clever virus was able to spread so quickly

Opening the attachment launches a Visual Basic script, a program which Love Bug uses to do three tasks ...

Bugged email arrives in in-tray labelled ILOVEYOU.

Attempts to download password - stealing Trojan Horse program from the web.

Copies itself by overwriting files ending with vbs, vbe, js, jse, css, wsh, set, hta, jpg, jpeg, mp2 and mp3.

Fig 2 The spread of the love bug

Email contains an attachment called LOVE- LETTER-FOR-YOU.TXT This is where the virus is found. At this point the virus is still inactive.

J=*	г=П		/—4
		tH	!

Sends a copy of itself to all names in the computer's Microsoft Outlook address book.

Facts of Love

£ Lovebug spread twice as fast as the Melissa virus which affected 300,000 US computers in March 1999.

£ Experts believe the worst is stiil to come with 21 new variants of the original virus detected so far.

UNIT 19