Exercise 4.Discuss with your group-mates the following statements. Try to prove your point of view.

1. The power supply is one of the most important components, that’s why it is worth spending the money to get a good one.

2. The expansion slots (PCI, AGP, ISA, etc.) allow additional functions.

3. UPS can prevent your from the data loss at power-down.

LESSON XII

Exercise 1.Read the words and word combinations.

to supersed – заменять

transfer – передача; передавать

scratch – царапина

abrasion – механическое повреждение поверхности

to lead to – приводить к чему-либо

double sided – двусторонний

dual layer – двухслойный

Exercise 2.The following terms you should know.

fixed media – постоянные, встроенные носители информации

removable media – переносные, сменные носители

to pull from –извлекать, выталкивать (запись)

backup device – устройство (накопитель) для архивации, резервного копирования

drive – привод

to hold – содержать, вмещать

hard drive (HDD)- жесткий диск

read arm – рычаг устройства для считывания

coil – катушка, обмотка

to burn – записывать

pit – впадина

data density плотность записи информации (на носителе данных)

CD)writer/burner – CD-райтер, сидирайтер ( устройство для записи компакт-дисков )/ программатор компакт-дисков

READ AND TRANSLATE THE TEXT

Class 2 Components. Storage

Sometimes one can distinguish between "fixed media" (the hard drive) that is more or less permanently mounted inside the computer case, and "removable media" (just about every other kind of media) that is easy to pull from one computer and put into another computer.

Floppy Disk drives. The first 8-inch floppy disk design was invented in the late 1960s by IBM, but these floppies were used only by a very limited group of people. Some time later 5.25" floppy disc was introduced and used in the 1980s. And only 3.5" floppies are supposed to be the most commonly used storage media. They hold from 400KB up to 1.44 MB. Floppy disks have largely been superseded by flash drives as a transfer medium, but are used as backup storage in our country. At the beginning of 2006 it was announced that all the floppy manufacturers would stop to produce such a product.

A hard drive (often called HDD)consists of one or more magnetic disks and a read arm with two electromagnetic coils for each disk. Each hard disk is divided into many sectors, each containing a certain amount of data. It is the cheapest and most common way to store a lot of data in a small space.

CD-ROM drive is a standard format for storing a variety of data. A CD-ROM holds about 700 MB of data. The media look like a small, somewhat flexible plastic disc. Any scratch or abrasion on the data side of the disc can lead to it being unreadable.

CD-RW drive supports the creation of CD-R and CD-RW discs, and also function as CD-ROM drives. These drives use low-powered lasers to 'burn' data into the active layer of the disc. Many CD writers (also known as 'burners') are now combination drives which also function as DVD-ROM drives. Most DVD-RW drives also have CD-RW capabilities.

DVD-ROM drive.This optical drives work on a similar principle to the CD-ROM, with a laser being used to read data stored in pits on the surface of a reflective disk. DVDs are read using a shorter wavelength of light. Besides a greater data-density, DVDs may be double sided and may be "dual layer".

DVD-RW drive works with DVD-discs and dual-layer disks (dual layer equipment and disks are now becoming more affordable).

VOCABULARY EXERCISES

Exercise 1.Find English equivalents:

Привод, записывать данные, жесткий диск, вмещать, устройство для резервной копии, двухслойный, плотность записи данных, двусторонний, пишущий привод.

Exercise 2.Read the following statements and name the kind of discs. You should choose only from: CD-RW, CD-R, DVD.

· These discs are 'write once' - once they have been written to, the data cannot be erased or changed.

· This disc has two layers for data storing.

· These discs can be rewritten or erased multiple times.

· Multisessions can be created and more data can be added to use this disc more than one time.

· This disc can hold about 4.7 gigabytes.

· This kind of discs is more expensive than two other ones.

Exercise 3.Read the following small text and answer the question: How can we find out the speed our data will be written on the disc?

CD-RW drives will typically have three speed ratings - one for reading discs, one for writing CD-R discs and another for writing CD-RW discs. Speed ratings vary from 1x to 52x, where 1x means that a CD is written/read in 'real time'. For example, a 52 minute audio CD would take about 52 minutes to create at 1x speed, and about 1 minute at 52x speed.

CD-drives have different speeds for any special purpose whether reading or writing discs. The specifications of any drives include the information about these speeds. Just the same situation we have with the discs of any kind. The speed on which it can be read or written is indicated on the surface of the discs.

The data can be written to the disc in a variety of formats to create an audio CD, a data CD, a video CD or a photo CD. The audio CDs should play on most standard audio CD equipment and the video and photo CDs will play on many consumer DVD players.

LESSON XIII

Exercise 1.Read the words and word combinations.

to generate – производить

light – легкий

to enable – делать возможным

to prevent – предотвращать

confusion – путаницу

rodent – грызун

to track – прослеживать

LED light – светодиодный индикатор

wireless – беспроводной

to be tied to – быть связанным, подключенным