[...]... (cunoitne) using more than one Task 4 Do you think the English in the text is: a formal? b neutral? c informal? 2 Do you think this article originally appeared in: a a computer magazine? b a general magazine for young people? c a general magazine for adults? d an online bulletin board? e the science page of a newspaper? Give reasons for your choices 1 Make these words negative by adding the appropriate... instructions (9, I) 8 a pattern used as a guide for creating letters or characters (8, T) 9 an individual dot on a computer screen (5, P) 23 Language focus B Word formation: prefixes When you are reading, you will come across unfamiliar words lt is often possible to guess the meanings of these words if you understand the way words in English are generally formed An English word can be divided into three parts:... reconverted to digital form prior to being input for processing 33 Reading Task 11 Before reading the text below, answer these questions 1 What are the advantages of digital transmission? 2 How does digital transmission differ from analog transmission? 3 What information does the code supply? Now read the text to check your answers Digital transmission Analog transmission has been in use for many years as... keyboard 14 Task 3 Task 4 Reading Before reading the text, match these words with their definitions: a clipboard 1 surface on which pictures or data are shown 2 electrical force b stylus 3 pattern used as a guide for creating letters or characters c screen 4 individual dot on a computer screen d grid 5 network of lines crossing at right angles e voltage 6 pointed implement for drawing or writing f pixel... switching from one to the other, for the purpose of increasing processing productivity This is known as multiprogramming (multi-tasking in the context of microcomputers), which requires a powerful operating system incorporating work scheduling facilities to 20 control the switching between programs This entails reading in data for one program while the processor is performing computations on another... files execute monitor format diagnose Task 17 1 2 3 4 5 6 7 8 9 10 22 Match these common DOS commands with the appropriate explanation a BACKUP searches for a specific string of text in a file CHDIR or CD b allows a text file from the current directory to be displayed on screen CHKDSK c allows the user to change the name of a file d saves the contents of the hard disk to a floppy disk for CLS security purposes... conductive coating Voltage is sent across the glass in horizontal and 40 vertical lines forming a fine grid; at any point on the grid, the 15 voltage is slightly different When the stylus — which is essentially a voltmeter — touches 45 the screen, it informs the computer of the voltage at that point The computer uses this information to determine where the stylus is and causes a liquid so crystal pixel to... meanings of these words if you understand the way words in English are generally formed An English word can be divided into three parts: a prefix, a stem, and a suffix Pre-means 'before' A prefix, therefore, is what comes before the stem Consider, as an example, the prefix de- (meaning 'reduce' or 'reverse') in a word like demagnetize (meaning 'to deprive of magnetism') A suffix is what is attached to... from one part of speech to another For example, -ly added to the adjective quick gives the adverb quickly Prefixes, on the other hand, usually change the meaning of the word For example, un- changes a word to the negative Unmagnetizable means 'not capable of being magnetized' Let us now consider some prefixes, their usual meanings, and how they change the meanings of English words Prefixes Negative and... a manufacturing company You are considering buying 30 notebook computers for your sales staff Find out about all the specifications of the model on offer Decide whether it is suitable for your needs 4Useful expressions How much does it cost? What power source does it use? How big/heavy is it? Operating systems Reading Task 14 Before you read the text, try to answer the following questions: 1 What is .