TRIGEM CW3S20A Canadian Product, Руководство по эксплуатации

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From now on, when this manual refers to the “main system
diskettes,” use the backup MS-DOS diskette.
In the same way that you can keep information grouped
together in manila folders, MS-DOS organizes data
into
files.
While you may store these folders in a cabinet, your computer
stores these files on disks. Separating information into files
allows you to work with that information more efficiently.
File Types
There are two basic file types:
Cl Program files
0 Data
files
Program files are files that perform a task. They manipulate the
computer and data files in order to achieve a result. MS-DOS is
a collection of program files, as are the control programs found
in application software.
Data files are files that contain the information (data) used by
program files. A file containing a list of names and addresses
would be a data file.
The two types of files are closely related. Program files usually
create data files. These may be the documents created by a
word processor, the numerical array created by a spreadsheet, or
some other collection of information.
Using MS-DOS With Your Computer
4-19