Abstract

Information on computers is organized into directories and files. Typically files have a filename followed by a filename extension which identifies the type of file. This file extension is important in some operating systems, such as Windows 95 and Windows NT, as it identifies the application program which is associated with the file. Table 11.1 shows some typical file types. Table 11.1 Typical file typesFull size table Files either contain text in the form of ASCII (a text file) or binary data. A text file uses ASCII characters and a binary file uses the binary digits which the computer uses to store values. It is not normally possible to view a binary file without a special program, but a text file can be viewed with a text editor.

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