Dr. Roger Webster Copyright 2008 1

EDW647 Internet For Educators Windows XP -> Using Files

Roger W. Webster, Ph.D.

Department of Computer Science

Millersville University

(717) 872-3539 office

Email: Roger.Webster@millersville.edu

Home Page: http://cs.millersville.edu/~webster/

EDW647 Info: http://cs.millersville.edu/~webster/edw647/

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What is a disk drive?

• Windows assigns a drive to every physical device connected to the computer

• Disk drivethe logical space where files and directories are stored, indicated by a letter followed by a colon (for example, C: for the hard drive and D: for the CDROM drive).

A: C: D:

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What is a directory?

• Directory or Folderan area on disk where a collection of related files are stored.

A: C: D:

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Typical directory or Folder structure

Folders or directories are hierarchical

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Facts about Windows XP folders

• A folder’s name consists of a maximum of 255 characters.

• The root folder, designated by c:\ exists on every formatted disk.

• A path describes how to find a file starting at the root directory (for example, to refer to a file in the “docs” directory shown on the previous slide use

c:\cs110\windows\docs Note the first \ designates the root, while the other \ are used to separate directory names.

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What is a file?• File

information assigned a name and stored on disk.

• File types:Text file (ASCII) only consists of characters on the keyboard, for example, letters, digits, and punctuation marks).

Binary file (contains text characters and characters that do not appear on the keyboard). For example characters like œ ® † ¥ ¨ ø š å �ß ƒ © ² Þ æ ° ç ¦ ˜µ Š ÷ ¿ × Æ Ú ¼ ‡ ° Œ Å Ç Â » « Í ). �

A: C: D:

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Facts about Windows XP files

• a file’s name is usually composed of two parts separated by a period. The part following the period is called the file’s extension and indicates the type of file. For example, an xls extension indicates an Excel worksheet.

• a file’s name consists of a maximum of 255 characters. You cannot use the characters\ ? : * “ < > |

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Some important file extensions• html web page HyperText Markup

Language

• csv Excel data file (email contacts)

• vbs Visual Basic Visual Basic Script program

• exe executable program

• avi MS Media Player Movie file

• mpeg MS Media Player Movie file

• Jpg, GIF, tiff Image Graphics files• pdf Adobe Acrobat Portable Data Format file

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Microsoft Audio Video Interweave (AVI) file - .avi Adobe Photoshop Eps file - .eps AutoCAD File - .dwg Bitmap image file - .bmp, .dib, .rle Graphic Interchange Format image file -.gif Microsoft Office Word document file - .doc Microsoft Office Word 2007 document file - .docx Microsoft Office Excel spreadsheet file - .xls Microsoft Office Excel 2007 spreadsheet file - .xlsx Microsoft Office Publisher file - .pub Microsoft Office PowerPoint Presentation file - .ppt Microsoft Office PowerPoint 2007 Presentation file - .pptx Executable file (program) - .exe, .com Hyper Text Markup Language file - .html, .htm JPEG image file - .jpg, .jpe, .jpeg, .jfif MPEG Layer 3 audio file - .mp3 MPEG Layer 4 audio file - .mp4 MPEG movie file - .mpeg, .mpg, .mp2, .m2ts Windows Movie Maker Project file - .mswmm Portable Bitmap file - .pbm, .pgm, .ppm, .pnm, .pfn PHP dynamic webpage script file - .php Pict file - .pict, .pct

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Portable Network Graphic image file - .png Microsoft PowerPoint slideshow file - .pps Photoshop's Large Document File - .psb Adobe Photoshop File - .psd, .pdd Macromedia Shockwave Flash Movie file - .swf Targa image file - .tga, .icd, .vst, .vda Temporary file - .tmp Tiff image file - .tif, .tiff Basic text file - .txt Wave audio file - .wav Xml Structured Data/Database file - .xml Portable Document Format file - .pdf ZIP compression file-.zip WinRAR archive file-.rar Backup copy of files-.bak Windows Media Video files - .wmv Windows Media Audio files - .wma Dynamic link library file - .dll Initialization file - .ini binary file- .bin