Добавил:
Upload Опубликованный материал нарушает ваши авторские права? Сообщите нам.
Вуз: Предмет: Файл:
методичка СР, 5, 2,3к.doc
Скачиваний:
334
Добавлен:
27.02.2016
Размер:
1.71 Mб
Скачать

2. Mind the following words and word-combination:

network — мережа

to captivate — полонити

to log on — входити, підключатися

to last — тривати

overload — перевантаження

to grow (past grew, p.p.grown) — рости, збільшуватися

breakthrough — велике досягнення, прорив

voice massage — голосове послання

video conferencing — відео-конференц-зв'язок

web TV — веб-телебачення

to browse — переглядати

cellular phone — стільниковий телефон

to dialing up — набирати номер, дзвонити

answering machine — автовідповідач

to handle — звертатися, мати справу з

amount — кількість

fiber optic cables — оптиковолоконний кабель

opposed — тут замість

binary code — бінарний код, двоїнний код

amount of bandwidth — пропускна здатність

fast modem — швидкий модем

coaxial cable — коаксильний кабель

to increase 1,000 fold — збільшити(ся) у 1000 разів

satellite dish — супутникова тарілка

lane — лінії руху

clog — засмічення, перешкода

customer — клієнт, покупець

business time — бізнес-час

3. Answer the following questions.

1. How many users are currently in the Internet?

2. How long does an average Internet call last?

3. What can cause the overload of the telephone system?

4. What was the main purpose of the Internet up to the 90s?

5. Do we need to have a computer to get access to the Inter­net today?

6. Who was the first to come up with the idea of using fiber optic cables?

8. What is the alternative way to get access to the Internet today?

Lesson 6

1. Read and translate the text:

Disks and drivers

A. Magnetic storage

Magnetic devices store data magnetically. A disk drive spins the disk at a 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, it’s surface is devided into concentic 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 red\white heads to move and find dadt 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.