File system

The purpose:

to form the conceptions: a file, a folder, a title

of the file, a full title of a file, a way to a file, a

file system, the expansion of a file.

The dictionary of the lesson1. File is a place on a disk (group of bites) which has a title.2. File system is a special way of the organization of the

information on a hard disk of a computer.3. A logic disk is a physical disk, a real disk or a part of a

physical disk to which the name is appropriated {given}.

4. The name of a file is the sequence of symbols allowing the user to orientate in a file system and to identify files.

5. The type (expansion) of a file is the sequence of symbols allowing a computer to compare the software with the contents of a file.

6. A folder (catalogue) is a set of files on one subject.7. The way to a file is a sequence of folders, beginning with

the upper one and finishing with that one in which the file is directly stored {kept}.

Keeping information in the encyclopedia Keeping the information on a disk The encyclopedia is an independent, complete physical object.

The name of the encyclopedia

Pages

Numbers of pages The chapters {head} in the encyclopedia are the objects containing the text information, figures,

hedules, etc. The name of chapters{heads}

Sections of the encyclopedia contain

thematically connected chapters. The maintenance or contents of the encyclopedia is means of fast search of the necessary chapter{head}, i.e. the instruction {indication}, in what section, in what

part, on what page the chapter{head} is located. The Arrangement of the maintenance {contents} in the encyclopedia is either at the end, or at the beginning. Damage or absence of contents

makes impossible to find the necessary chapters{heads}.

Define{Determine} key words for each conception, filling the following table:

Keeping information in the encyclopedia Keeping the information on a disk

The encyclopedia is an independent, complete physical object. A logic disk is a diskette, the Winchester which can be divided entirely or its parts, a compact disc

The name of the encyclopedia A name of a logic disk: A:- name of a diskette C: or D: - a name of Winchester E:, F: - names of CD disks... (Alphabetically)

Pages clusters of a disk

Numbers of pages Numbers of clusters

The chapters {head} in the encyclopedia are the objects containing the text information, figures, hedules, etc.

Files on a disk are the areas containing this or that kind of the information.

The name of chapters{heads} Names of files.

Rules of the task of names of files:

1 .Length is nо more than 255 symbols.

2. Russian and Latin alphabet, figures, the signs, special symbols are used.

Such symbols as: \ / *? : “” <>are not used.

Sections of the encyclopedia contain thematically connected chapters. Catalogues {folders) are objects in which files with identical subjects are collected. Names to folders are given according to the same rules, as names to files. Inside one folder cannot be kept any folders or files with identical names

The maintenance or contents of the encyclopedia is means of fast search of the necessary chapter{head}, i.e. the instruction {indication}, in what section, in what part, on what page the chapter{head} is located.

For the user:

The way to a file shows how it is necessary to search it, what folders should be open. For the operational system:FAT is the table containing the information in what sectors of a disk (on what pages) this or that file is located.

The Arrangement of the maintenance {contents} in the encyclopedia is either at the end, or at the beginning. Damage or absence of contents makes impossible to find the necessary chapters{heads}.

FAT - the table is located in special (system) area of a disk and its damage also results in impossibility of searching of the necessary files. Therefore FAT - the table has a backup copy on which it is possible to restore the original

Define{Determine} key words for each conception, filling the following table:

Тип файла. Расширения

The file contains the program - the executed file .ехе, .com

The file contains the text information .txt, .doc

The file contains the graphic information .bmp, .gif, .jpg

The file contains the sound information .wav, .mid

The file contains a video information .avi,

The file contains Web-page .htm

The file - copy . bak

Thus, the ordered structure of files and catalogues which allows to find the necessary information quickly is formed on a disk. Such structure is called file system and it looks like this one:

Catalogue _l Catalogue_ 1.1

Catalogue_ 2 Catalogue_ 1.2

Root

catalogue Catalogue _3 File _ 1.1

File_1 File _1.2

C:\ GAMES \ CHESS \ chess.exe C:\ TEXT \ proba.txt

Запишите полные имена всех файлов

Thus, we draw the following conclusion:1. All information on disks is stored {kept} in files.2. Expansion points to the contents of a file.

3. The file is open with the help of the program in which it has been created, or by the universal program.

4. Files with similar contents or identical purpose {assignment} can “be put in folders (catalogues).

5. Also it is possible to unite catalogues (folders).