Lesson 8

Text. Storage Media.

Word-building. The il-, in-, un-, non-, mis-, dis- prefixes.

Structure. Simple Tenses in the Active Voice.

Ex.1 Read and memorize the following abbreviation:

1. MFM (Modified Frequency [´fri:kwƏnsı] Modulation) – модифицированная частотная модуляция

2. RLL (Run Length [leŋθ] Limited) – запись с ограниченной длиной отрезка

3. IDE (Integrated Drive Electronics) – интегрированная дисковая электроника

4. ESDI (Enhanced [ın´ha:nst] Small Device Interface) - улучшенный интерфейс малых устройств

5. SCSI (Small Computer System Interface) - интерфейс малых компьютерных систем

6. PIO(ProcessorInput/Output) - режим передачи данных через ЦП, программный ввод/вывод

7. DMA (Direct Memory Access) – прямой доступ к памяти

8. CLV (Constant Linear [´lınıƏ] Velocity [vı´lƆs(ı)tı]) – постоянная линейная скорость

9. DVD (Digital Versatile [´vƏ:sƏtaıl] Disk) - цифровой универсальный диск

Ex. 2 Translate into English:

скорость, частота, универсальный, прямой, улучшенный, встроенный, постоянный, цифровой, линейный, доступ, ограниченный, длина, модифицированный, модуляция.

Ex.3 Read and memorize the following words:

1. amount [Ə´maunt] - количество

2. record [rı´kɔ:d] - записывать (but: -[´rekɔ:d] -запись)

3. concentric [kƏn´sentrık] - концентрический

4. track [træk] - дорожка

5. (to) spin [spın] - вращаться

6. (to) measure [´meʒƏ] - измерять

7. cylinder [´sılındƏ] - цилиндр

8. although [ɔ:l´ðƏu] - хотя

9. map [mæp] – карта, план, схема - наносить на карту; отображение, соответствие - отображать, устанавливать соответствие, преобразовывать

10. capacity [kƏ´pæsıtı] - емкость, производительность

11. enough [ı´nʌf] - достаточно

12. backup [´bæk´ʌp] – резервировать, копировать, поддерживать

13. portable [´pƆ:t(Ə)bl] - мобильный, портативный

14. archive [´a:kaıv] - архив, архивировать

15. laser [´leızƏ] – лазер

16. equivalent [ı´kwıvƏlƏnt] - эквивалент

17. (to) overwrite [ƏuvƏ´raıt] - перезаписывть

18. (to) achieve [Ə´ʧi:v] - достигать

19. magnetic [mæɡ´netıc] – магнитный (but: - magnet [´mæɡnıt], maɡneto [mæɡ´nı:tƏu])

20. primarily [´praımƏrılı] – первоначально

21. actually [´ækʧuƏlı]- дествительно

22. erase [ı´reız] – удалять, уничтожать

23. trademark [´treıdma:k]– торговая марка

24. means [mi:nz] – средство(а) (but: to mean – значить, meaning – значение)

25. entire [ın´taıƏ] – весь, полный

Ex.4 Read and translate into Russian:

Storage media

1.A hard disk is a unit that stores and provides access to large amounts of data. Today's computers typically come with a hard disk that contains several gigabytes of storage.

A hard disk is a set of "disks," each of which has data recorded electromagnetically in concentric circles or "tracks" on the disk. A "head" records (writes) or reads the information on the tracks. Two heads, one on each side of a disk, read or write the data as the disk spins. Disk access time is measured in milliseconds. Although the physical location can be identified with cylinder, track, and sector locations, these are actually mapped to a logical block address that works with the larger address range on today's hard disks.

2.CD-ROM (Compact Disk Read only Memory) is a storage medium with a high capacity. It uses laser optics instead of magnetic means for reading data. The computer can read data from these disks, but cannot write data to the disks.

3.DVD (digital versatile disk) is an optical disk technology that quickly replaces the CD-ROM disk over the next few years. The digital versatile disk (DVD) holds 4.7 gigabyte of information on one of its two sides, or enough for a 133-minute movie. With two layers on each of its two sides, it will hold up to 17 gigabytes of video, audio, or other information.

4.The magneto-optical (MO) diskette/disk drive is a way to backup files on a personal computer. MO device uses both magnetic and optical technologies to get ultra-high data density. A typical MO cartridge is a bit larger than a 3.5-inch magnetic diskette. But if the older type of magnetic diskette can store 1.44 megabytes (MB) of data, an MO diskette can store many times that amount, ranging from 100 MB up to several gigabytes (GB).An MO system achieves its high data density by using a laser and a magnetic read/write head in combination. Both the laser and the magnet are used to write data onto the diskette. Data can be erased and/or overwritten an unlimited number of times, as with a 3.5-inch diskette.

5 . A Zip drive is a small, portable disk drive used primarily for backing up and archiving personal computer files. The trademarked Zip drive was developed and is sold by Iomega Corporation. Zip drives and disks come in two sizes. The 100 megabyte size actually holds 100,431,872 bytes of data or the equivalent of 70 floppy diskettes. The Iomega Zip drive comes with a software utility that lets you copy the entire contents of your hard drive to one or more Zip disks.

Ex.5 Give the synonyms of the following words:

(to) hold

(to) write

(to) allow

(to) delete

whole

film

Ex.6 Translate into English:

1. Жесткий диск обладает большим быстродействием.

2. Время обращения к жесткому диску измеряется в миллисекундах.

3. Две головки считывают или записывают данные во время вращения диска.

4. DVD способен хранить 8,5 Гбайт информации на одной стороне, а с двух сторон – 17 Гбайт.

5. МО диски используют магнитную и оптическую технологии.

6. Емкость съемной дискеты 100 Мб.