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III. Complete the sentences.

1. The result of a collaboration between Hewlett-Packard, Mitsubishi Chemical Corporation, Philips, Ricoh and Sony, CD-RW allows a user to ...

2. The technology used in CD-Rewritable does not incorporate any magnetic field like ...

3. A CD-RW disc's phase-change medium consists of ...

4. ... CD-RW commonly uses a crystalline compound made up of a mix of silver, indium, antimony and tellurium.

5. ... the atoms revert back to an ordered state.

6. By late 2000 the best drives were capable of ...

IV. Fill in the blanks with suitable words: allows, uses, are, incorporate, record, read, consists, ensure.

1. CD-RW allows a user to ... over old redundant data or to delete individual files. 2. CD-RW's specifications ... compatibility within the family of CD products. 3 The technology used in CD-Rewritable does not ... any magnetic field like the phase-change technology used with MO technology. 4. A CD-RW disc's phase-change medium ... of a polycarbonate substrate. 5. CD-RW commonly ... a crystalline compound made up of a mix of silver, indium, antimony and tellurium. 6. CD-RW discs can only be ... on CD players that support the new MultiRead specification. 7. CD-RW drives ... dual-function, offering both CD-R and CD-RW recording. 8. Although UDF ... users to drag and drop files to discs, CD-RW isn't quite as easy to use as a hard disk.

V. Find proper English-Ukrainian equivalents.

Delete, redundant data, consumer product, compatibility, phase-change, recording layer, debatable.

Записуючий шар, споживчий товар, фазовий, суперечливий, надлишкові дані, сумісність, видаляти.

VI. Find the mistakes and correct the sentences.

1. The computer of forty years ago ran two programs at a time.

2. It may have passed several days before the first programmer get a chance to run his deck of card throughout the machine again.

3. The computer program would load the program the programmer had written and push it.

4. Once upon a time, there were no such things as an operating system.

5. Some resources can be on the hard disk, or a printer, or the monitor.

VII. Complete the article. Use but, although or however.

Bill Gates became interested in computers at school although in those days they weren’t very common. When he left school, he went to Harvard University to study law. _______, he spent most of his time in the computer centre. In 1975, he and his friend Paul Allen successfully wrote a software program for the first microcomputer, and Altair, _______ they didn’t even have one. Gates was top of his class at Harvard, _______ he left without finishing his degree. Then he and Allen started Microsoft. In the 1990s, the US government wanted to break up a Microsoft because they said the company was a monopoly. Gates was able to stop them, _______. Today Gates is a billionaire, _______ he also gives millions of dollars to charity.

VIII. Translate the text into English.

Key words: variety, many times, to be obliterated, phase change, small blister, amorphous.

Text C

  1. CD-RW

CD-RW (Compact Disc-ReWritable, Перезаписуваний компакт-диск) – різновид компакт-диску (CD), розроблений в 1997 році для багаторазового запису інформації.

Різниця між CD-R і CD-RW полягає в тому, що диски CD-RW можуть бути стерті й повторно записані, у той час як на дисках CD-R можливий тільки однократний запис. В іншому CD-RW використовуються так само, як і диски CD-R . Технологія запису інформації на CD-RW-диски дещо відрізняється від CD-R. Приводи CD-RW використовують технологію зміни фази. Замість створення "пухирців" і деформацій записуваного шару барвника, стан матеріалу в записуваному шарі змінюється із кристалічного на аморфний.

Unit 13

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