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2.7 SYSTEM SOFTWARE - Coggle Diagram

- - - - A file manager is a utility that performs functions related to file management
        
        Function: helps user to keep track of files and folders such as;
        -Display a list of files
        -Organize files in folders
        -Copy, Rename, Delete, Move, and Sort Files
        -Create shortcuts
        
        Example:
        -Windows File Explorer
        -Finder
    - - Disk clean up is a utility program that search for and removes unnecessary files.
        
        Functions: To search for and removes unnecessary files such as:
        -Downloaded programs files
        -Temporary Internet files
        -Deleted files
        -Unused programs files
        
        Examples:
        -Windows Disk Cleanup
        -Avast Cleanup Premium
    - - Compression tool is a utility program that shrinks the size of files
        
        Functions of compressing file: to shrinks size of a file
        
        Files are compressed to:
        -Free up space on storage media
        -Attach in email
        
        Compressed files sometimes are called zipped files.
        
        Examples:
        -WinZip
        -WinRAR
    - - Antivirus program is a utility program that protects a computer against malware such a virus, worm and Trojan horse.
        
        Functions: To protect a computer against viruses by identifying and removing any computer viruses found in memory, on storage media or on incoming files.
        
        Examples:
        -Kaspersky Antivirus
        -Avira Antivirus
    - - -Spyware remover is a utility programs that detects and deletes spyware.
        -Spyware is a program placed on a computer without the user's knowledge that secretly collect information about the user
        
        Function of spyware remover: to detects and deletes spyware
        
        Examples:
        -Spyware protection
        -SpyHunter
    - - -Adware remover is a utility program that detects and deletes adware
        -Adware is a software that displays unwanted ads when a user is online, collects marketing data and other information without the user's knowledge
        
        Function:
        To detects and deletes adware
        
        Example:
        -AdwCleaner
        -Bitdefender
    - - -Disk defragmenter is a utility program that reorganizes files and unused space on a hard disk so that OS access data more quickly and program runs faster.
        
        Function:
        -To reorganizes files and unused space on a hard disk for optimal efficiency
        
        Examples:
        -WinContig
        -MyDefrag
        
        Why use disk defragmenter:
        -Enable the operating system accesses data more quickly.
        -Make programs run after.
    - - Function(Back-up):
        -Allow users to copy selected files or the entire hard disk to another storage medium
        
        Function(Restore):
        -Restore data from a backup to the original storage location or to a replacement device.
        
        Examples:
        -IDrive
        -iCloud Backup
- - - - Starting computers and mobile device
        
        The process of starting and restarting a computer or mobile device is called booting.
        
        Two types of booting:
        -Cold boot is the process of starting a computer that has been powered off completely.
        -Warm boot is the process of restarting a computer while it remains powered on.
      - 2 ways of shutting down computers and mobile device:
        -Shutting down/log off
        -Sleep mode saves any open documents and programs to RAM, turns off all unneeded functions, and then places the computer in a low-power state.
    - - User interface (UI) controls how users enter data and instructions and how information is displayed on the screen
        
        2 techniques of user interface:
        -Command-line user interface
        -Graphical User Interface (GUI)
        
        Command-line:
        
        Difficult to use for new user because of the memorization and familiarity needed to operate a command line interface
        
        Require less system resources than GUI
        
        GUI:
        
        Easier to use because most users pick up this interface using mouse, menu and icons
        
        Requires more system resources because of each of he elements that need to be loaded such a s icons and fonts.
    - - Allow user to run multiple programs concurrently
    - - Step 1:
        The operating system transfer the least recently used data and program instructions from RAM to the hard disk because RAM is needed for other functions.
        Step 2:
        The operating system transfers data and programs instructions from the hard disk to RAM when they are needed
    - - The operating system can access a report information about various computer resources and devices for example user can monitor the processor, drive, network, and the memory usage.
    - - Through the operating system such as window you can connect to the internet
    - - You can create folder, rename folder, and grab file into the folder
      - you can use search function to search for file and you can use administrative tools to manage your computer
    - - Operating system organize and coordinate how multiple user access and share resources on earth network