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A Match the instructions to the pictures.



1 Protect your floppies against high temperatures. □

2 Remember to block the disk if you want to be sure that information

is not changed or erased by accident. □

3 Do not put heavy objects on'top of the disk. □

4 Magnetic fields can damage the information stored on disks.

Don't leave them near the telephone. □

5 Keep disks away from water and humidity. □

6 Do not touch the magnetized surface under the metallic cover. □

B In pairs, tell each other what you must or mustn't do to protect your disks. Example

You mustn't leave them on top of your computer.

1 in a protective case

2 into the disk drive very carefully

3 near strong magnetic fields

4 at a temperature of between 10°C and 52CC

5 bend or fold the disk

Читання тексту за темою: «Technical details» і колективне опрацювання нових лексичних одиниць

А Read the text and look at the diagrams.

Technical details

Information stored in the RAM is lost when the computer is turned off. Because of this, data and applications are stored in either hard or . floppy disks which provide a more permanent backing store.

Floppy disks are so called because they consist of flexible plastic material which has a magnetizable surface. They are:available in two sizes: 5.25-inch disks are used in old computers, 3-5-inch disks are the most popular today.

The surface of a floppy disk is divided into concentric circles or 'tracks', which are then divided into 'sectors'. When you insert a blank disk into a disk drive, it must be 'initialized', or formatted, before information can be recorded onto it. This means that magnetic areas are created for each track and sector, along with a catalogue or 'directory' which will record the specific location of files.

 
 

When you save a file; the operating system moves the read/write heads of the disk drive towards empty sectors, records the data and writes an entry for the directory Later on, when you open that file, the operating system looks for its entry in the directory on the disk, moves the read/write heads to the correct sectors, and reads the file into the RAM area.







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