Тема 10 Прилади збереження інформації. - part 18

1 Прочитайте та вивчіть терміни (усно)

a hard disk drive (HDD) – жорсткий диск;

non-volatile storage device – енергонезалежний пристрій зберігання;

a sealed unit – герметичний, ізольований блок;

encoded data – закодовані дані;

removable and rewritable – змінний та перезаписуючий;

durable design – надійна модель;

printed circuit board – друкована схемна плата;

female connector – рознім-розетка (проф. `мама`);

male type-A USB connector – рознім-вилка, відповідна частина розніму (проф. `тато`);

host computer – головний комп’ютер;

clock signal – сигнал тактового генератора / таймера;

write-protect switches – перемикач захисту від запису;

memory card slot – слот плати пам’яті;

to increase rotational speed – збільшувати обертову швидкість;

large-scale – великомасштабний;

transfer rate – швидкість передачі даних;

spin – крутитися, обертатися;

to decrease access – зменшувати доступ;

USB mass storage controller – USB - контролер масової пам’яті;

data retention – збереження, утримання даних;

secondary – вторинний, додатковий;

run – дія / запуск / виконувати / завантажувати програму;

2 Прочитайте та перекладіть текст (письмово)

MAGNETIC STORAGE

Magnetic devices store data magnetically. A disk drive spins the disk at high speed and reads its data or writes new data onto it.

A floppy disk drive uses 3.5 inch diskettes which can only hold 1.44 MB of data; it's often called A: drive and is relatively slow.

Most PCs have one internal hard disk, usually called C: drive, which can hold several gigabytes of data. It's used to keep the operating system, the programs and the user's files easily available for use.

When you format a disk, or prepare it for use, its surface is divided into concentric circles called tracks. Each track is further divided into a number of sectors. The computer remembers where information is stored by noting the track and sector numbers in a directory.

The average time required for the read/write heads to move and find data is called access time; it is measured in milliseconds (ms). Don't confuse 'access time' with 'transfer rate', the rate of transmission of data from the disk to the CPU (e.g. 15 megabytes per second).

A portable hard drive is an external unit with the drive mechanism and the media all in one sealed case. You can use it to make a backup, a spare copy of your files, or to transport data between computers.

3 Заповніть пропуски відповідними словами із тексту у вправі 2. (письмово)

1. The first rule of data storage is to make a … of all important files. 2. A … is slower than a hard drive and can only hold 1.44 MB disks. 3. The … inside your PC is made of aluminium alloy covered with a magnetic coating. This makes the disk itself a rigid plate, hence its name. 4. The … are circles around a disk and the … are segments within each circle. 5. This hard drive is a 60 GB IBM model with a fast … of 8 ms. 6. The … is the rate of transmission of data from the disk to the CPU. This is usually described in megabytes per second. 7. Apple's iPod music player can double as a … for transporting computer data.

4 Прочитайте опис роботи жорсткого диску, заповніть пропуски відповідними словами із списку. (письмово)

Active words: controls, runs, cause, stores, move, spins, important, touches, contains, hold, stacked, runs

A HARD DISK DRIVE

The hard disk drive inside your PC is like a filing cabinet. Instead of paper, it (1) … everything electronically. It can (2) … all the software that (3) … on your system and all your personal files. It’s a pretty (4) … part of your computer. A hard disk drive normally (5) … several disks. They’re (6) … on top of each other. The drive motor (7) … the disks very quickly. It (8) … all the time your PC is in use. There’s a gap, a space, between each disk. We need the gaps so the read/write heads can (9) … across the disks and reach all parts quickly. The head motor (10) … the read/write heads. The space between the head and the disk surface is tiny. Even smoke from a cigarette can (11) … a crash. A crash is what happens when the head (12) … the surface of the disk. To keep out dust and smoke, the drive is inside a sealed case.

5 Дайте відповіді на запитання (використовуючи Collocations) (письмово)

1. What sort of locations or access points can be used to surf the Net without wires? 2. What feature allows an electronic device to be used as soon as it is connected to a computer? 3. If you are gaining illegal or unauthorized access to computer data, what are you doing? 4. If you want to move a picture to a new location, what do you do? 5. What expression is used to refer to personal, confidential or classified information?