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Files

| Management | Names | Types/Formats | Sizes | Text | Data | Graphics | Audio | Video | Filesize Overview |

Management:

Keep your files in subfolders for easy location, backup, etc. Here is a sample tree structure:
c:\My Documents\blackboard\
eng101sect3fall03
eng204sect1spr04
syllabus
booklist
tests
c:\My Documents\courses\
course 1
course 2
c:\My Documents\dept\
memo_oct11_1999
minutes_dec12_2001.

Names:

Windows lets you assign long filenames, such as "this is a document dealing with the names of files"
But you cannot do this with the naming of files destined for HTML or e-mail attachment. Use shorter names, underlines instead of spaces, and no other symbols. For example, use "student_recommend" instead of "students' recommendations" or "king_and_I" instead of "The king & I"

File types/formats and extensions:

Typically, a complete filename has the pattern name.extension.  The extension, a period with 3 or 4 characters following it, is assigned by the software used to create the file, such as .doc for a Word document, .xls for an Excel spreadsheet, .htm or html for a web file. Conversely, the extension tells us what type of file we are dealing with.

Applications tend to have the extension .exe -- for executable. They are generally in the folder My Programs.

Text files:
Extension

Use
Created in or for
.txt
text
plain text without formatting
Notepad, Wordpad, Word
.doc
document
formatted text
Word
.rtf
rich text format
formatted text, cross platform
Word, Write, etc.
.pdf

formatted text to print as is
Acrobat
.wps

formatted text
WordPerfect
.html or .htm
hypertext markup language
formatted text
the web


Data files:
Extension



.mdb
data base
data base
Access
.xls
Excel spreadsheet
spreadsheet
Excel


File sizes:

They will vary even when you use the identical document but save in a different format or create it with a different application.
The smaller the size, the faster to download and view -- this is a consideration when you want to e-mail a file or use it on a webpage.
I created the file file_formats (files suitable for webpages), then saved it in different formats, and these were the results:

Formatted text look-alikes:
File_formats.doc  about 26 k (Word document)
File_formats.rtf  about 18 k (Rich Text Format)
File_formats.pdf  about 79 k (Acrobat file)
File_formats.wps  about  9 k (Word Perfect document)

No formatting, just plain text:
File_formats.txt  about   5 k (Notepad or Wordpad document)

HTML:
File_formats.htm  about 16 k (web page created with Word)
File_formats2.html about   5 k (same web page created with Netscape)