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Did you know that all information used in technology has a certain extention to differentiate the format for all the information?

The following are some examples :

Text, Graphics, Multimedia Common Sound, Still-Video, and Motion-Video Formats on the Web
Extension	Text & Graphics Formats	Explanation
TXT, DOC	MS Word	Word processing application
WPD	WordPerfect	Word processing application
RTF	Rich Text Format	Method of encoding text formatting and document structure using ASCII character set.
PPT	Microsoft PowerPoint	Presentation Graphics application
PRS	Harvard Graphics	Presentation Graphics application
XLS	MS Excel	Spreadsheet application
HTM	MS FrontPage	Editor: application for creating and editing Web pages. Explorer: application for maintaining, testing, and publishing webs.
Extension	Sound Formats	Explanation
RA	RealAudio	Used with RealAudio Web Server and RealAudio Player add-on for browsers
SBI	Sound Blaster Instrument	Used for a single instrument with Sound Blaster cards
WAV	MS Waveform	Sound format used in Windows for event notification
Extension	Still-Video/Graphics Formats (SVF)	Explanation (Raster or bitmap images)
GIF	Graphics Interchange Format	Compressed graphics format commonly used on CompuServe
BMP	Windows bitmap
PCC, PCX	PC Paintbrush	Bitmap images
JPEG, JPG	Joint Photographic Experts Group	Highly compressed format for still images, widely used for multi-platform graphics
TIFF	Tagged Image File Format	High-resolution, tag-based graphics format used for the universal interchange of digital graphics
PCD	Photo CD	A graphics file format developed by Eastman Kodak Company
PDF	Portable Document Format	Adobe's format for multi-platform document access through its Acrobat software
PS	PostScript	Adobe's type description language, used to deliver complex documents over the Internet Adobe's type description language, used to deliver complex documents over the Internet sumber dipetik daripada :   http://www.answers.com/topic/information-technology