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SYSTEM SOFTWARE - Coggle Diagram

- - - - Privately owned and limited to a specific vendor or computer model and need yearly license
    - - Software which can be used, modified and improved by anyone can be redistributed freely
- - - - A set of programs that coordinate all activities among computer or mobile device hardware
    - - DEKSTOP OPERATING SYSTEMS
        
        A complete operating system that works on a desktops, laptops and some tablets
        
        Sometime called a stand-alone operating system
        
        EXAMPLE FOR PRPPRIETARY DESKTOP OS
        
        Windows AND macOS
        
        EXAMPLE FOR OPEN SOURCE DESKTOP OS
        
        Chrome OS and Linux
      - SERVER OPERATING SYSTEMS
        
        A multiuser operating system that organizes and coordinates how multiple users access and share resources on a network
        
        EXAMPLE FOR PROPRIETARY SERVER OS
        
        Windows Server and macOS Server
        
        EXAMPLE FOR OPEN SOURCE SERVER OS
        
        Ubuntu and Linux
      - MOBILE OPERATING SYSTEMS
        
        An operating system that resides on mobile devices such as smartphones
        
        EXAMPLE FOR PROPRIETARY MOBILE OS
        
        IOS and Windows(mobile edition)
        
        EXAMPLE FOR OPEN SOURCE MOBILE OS
        
        Android and Tizen
  - - - FILE MANAGER
        
        help 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 Explorer
        
        Finder
      - DISK CLEAN UP
        
        to search for and removes unnecessary files such as
        
        downloaded program files
        
        temporary internet files
        
        deleted files
        
        unused program files
        
        Example
        
        Windows Disk Cleanup
        
        Avast Cleanup Premium
      - COMPRESSION TOOLS
        
        to shrink size of a file
        
        Files are compressed to:
        
        free up space on storage media
        
        attach in email
        
        compressed files sometimes are called zipped files
        
        Example
        
        WinZip
        
        WinRAR
      - ANTI-VIRUS PROGRAM
        
        to protect a computer against viruses by identifying and removing any computer viruses found in memory, on storage media or on incoming files
        
        Example
        
        Kaspersky Antivirus
        
        Avira Antivirus
      - SPYWARE REMOVER
        
        a program placed on a computer without the user's knowledge that secretly collects information about the user
        
        to detects and deletes spyware
        
        Example
        
        Spyware Protection
        
        spyhunter
      - DISK DEFRAGMENTER
        
        to reorganizes files and unused space on a hard disk for optimal efficiency
        
        WHY???
        
        Enable the operating system accesses data more quickly
        
        make programs run faster
        
        Example
        
        WinContig
        
        MyDefrag
      - BACK-UP UTILITY
        
        allows users to copy selected files or the entire hard disk to another storage medium
        
        Example
        
        IDrive
        
        iCloud Backup
      - RESTORE UTILITY
        
        restore data from a backup to the original storage location or to a replacement device
        
        Example
        
        IDrive
        
        iCloud Backup
      - ADWARE REMOVER
        
        software that displays unwanted ads when a user is online, collects marketing data and other information without the user's knowledge
        
        to detects and deletes adware
        
        Example
        
        AdwCleaner
        
        Bitdefender
- - - - COLD BOAT
        
        process of starting a computer that has been powered off completely
      - WARM BOAT
        
        process of restarting a computer while it remains powered on
    - - SHUTTING DOWN / LOG OFF
      - SLEEP MODE
      - HIBERNATE
  - - - Command-line UI
        
        user types commands language represented by short keywords or abbreviations to enter data and instructions
        
        DISADVANTAGE
        
        difficult to use since user have to type the exact spelling anc punctuations
      - Graphical UI
        
        user interact with menus and icons to give commands
        
        ADVANTAGE
        
        easier to use as user can click the instructions provided in the form of menu
  - - - to optimizes the use of RAM
    - - OS allocates data & instructions to a memory while they are being processed
      - then, it monitors the contents of memory
      - finally, OS releases the item from being monitored in memory when the processor no longer requires them
  - - - To assess and reports information about various computer resources and devices
  - - - To provide a means to establish an internet connections
  - - - managing files
      - searching for file
      - viewing images
      - securing a computer
      - uninstalling programs
      - cleaning up data
      - defragmenting disks
      - diagnosing problems
      - backing up files and disks
      - setting up screen saver
  - - - to organize and coordinate how multiple users access and share resources on a network
    - - printer
      - internet access
      - file
      - programs