Class Agenda – 09/06/2011
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Transcript of Class Agenda – 09/06/2011
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XPXPXPClass Agenda – 09/06/2011
• Discuss process of application development (see slides from 09/01/2011)
• Present computer data organization.• Explore files, folders, and libraries in Windows 7.• Explain logistics of course including course file
placement.
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XPXPXPComputer Data Organization
Conceptual• I want to buy music on
iTunes (run a program on your computer).
• iTunes must access your account (Apple’s computers).
Physical
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Primary Storage/Main
Memory
Processor
ALU
Secondary Storage/Disk
Data and Programs
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Computer Data Organization Vocabulary
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Bits
Bytes
Program Files Data Files
Database
Fields
Records
Windows Library: View
Folders
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XPXPXPOrganizing Files and Folders
• A file is a collection of bytes that has a name and is stored in a computer.
• A file can store a “program” or “data”• Organize files by storing them in folders• Disks contain folders that hold files
– USB drives– Compact discs (CDs)– Digital video discs (DVDs)– Hard disks
• Each drive is assigned a letter
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XPXPXPUnderstanding the Need for Organizing Files
• Windows (and all other operating systems) organizes folders and files in an hierarchy, or file system
• Windows stores the folders and important files it needs to turn on the computer in its root directory
• Folders stored within other folders are called subfolders
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Developing Strategies for Organizing Files
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XPXPXPDeveloping Strategies for Organizing Files
• Type of disk you use to store files determines how you organize those files
• Storing files on removable media allows you to use simpler organization
• The larger the medium, the more levels of folders you should use
• You should have a “backup”, or duplicate copy, of all files– Definitely all data files– All program files that you don’t have available in other
forms (downloads, other media)
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XPXPXPExploring Files, Folders, and Libraries
• Windows Explorer and the Computer window show the drives, folders, and files on your computer– Each has a slightly different view
• A folder window displays the files and subfolders in a folder– Divided into two sections, called panes
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Exploring Files, Folders, and Libraries
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XPXPXPUsing Libraries and Folders
• When you open Windows Explorer, it shows the contents of the Windows built-in libraries by default
• Libraries display similar types of files together, no matter where they are stored
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Files in a Folder Window
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XPXPXPNavigating to Your Data Files
• The file path is a notation that indicates a file’s location on your computerG:\FM\Tutorial\Map.png– G: is the drive name– FM is the top-level folder on drive G– Tutorial is a subfolder in the FM folder– Map.png is the full filename with the file extension
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XPXPXPNavigating to Your Data Files
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XPXPXPManaging Folders and Files
• Creating a folder– In the Navigation pane, click the drive or folder in
which you want to create a folder.– Click New folder on the toolbar.– Type a name for the folder, and then press the
Enter key.
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XPXPXPWorking with Folders and Files
• Moving and Copying Files and Folders– Moving a file removes it from its current location and places it in a new
location you specify– Copying places the file in both locations
• Naming and Renaming Files– Filenames provide important information about the file, including its
contents and purpose• Main part of the filename• File extension
– A filename extension identifies file type and indicates program in which file was created
• Deleting Files and Folders– Recycle Bin is an area on your hard disk that holds deleted files until
you remove them permanently
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