Тема: What is a Hard Disk Drive (HDD)?

Тема: What is a Hard Disk Drive (HDD)?

Слова в тетрадь, отвечаем на вопросы

Hard disk drive is the mechanism that reads and writes data on a hard disk. Hard disk drive has many inflexible platters (discs) coated with magnetic material. Read/write heads can record computer data on these discs. Atypical hard disk rotates at 3,600 revolutions per minute, and the read/ write heads ride over the surface of the disk on a cushion of air 25 micron deep. Hard disk drives (HDDs) for PCs generally have seek times of about 12 milliseconds or less. Hard disk drives are sometimes called Winchester drives. Winchester is the name of one of the first popular hard disk drive technologies developed by IBM in

What is a Monitor?

Monitor is another term for display screen. First monitors were black- and- white with cathode ray tube. Nowadays most monitors are colour monitors. Besides, colour LCD monitors are becoming more and more popular. Monitors have different screen sizes. Like televisions, screen sizes are measured in inches from one corner of the screen to the opposite corner diagonally. A typical size for small monitors is 14 inches. Monitors that are 16 or more inches diagonally are often called full-page monitors.

Words:

keyboard — клавиатура

alphanumeric keys — буквенно-цифровые клавиши

punctuation keys — клавиши пунктуации

comma — запятая

period — точка

semicolon — точка с запятой

function key — функциональная клавиша

control key — клавиша управления

arrow key — клавиша с изображением стрелки

Caps Lock key — клавиша фиксации регистра заглавных букв

layout — расположение

enhanced keyboard — расширенная клавиатура

return key — клавиша возврата каретки

shift key — клавиша переключения регистра

num lock — фиксация числового регистра

revolutions per minute — оборотов в минуту

cushion of air — воздушная подушка

seek time — время поиска

cathode ray tube — электронно-лучевая трубка

Questions:

1. How are the keys on computer keyboards classified?

2. How is the standard layout of keys on a keyboard called?

3. How many keys has enhanced keyboard?

4. How are hard disk drives sometimes called?

5. What is hard disk drive?

6. How are monitor screen sizes measured?

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