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SYSTEM SOFTWARE - Coggle Diagram

- - - - Starting and shutting down computers
        
        Starting-
        i. Cold boot is the process of starting a computer that has been powered off completely.
        ii. Warm boot is the process of restarting a computer while it remains powered on.
        
        Shutting down-
        i. Shutting down/ log off.
        ii. Sleep mode saves any open documents and programs to RAM, turns odd all unneeded functions, and then places the computer in a low power state.
        iii. Hibernate saves any open documents and programs to a hard disk before removing power from the computer.
      - Provide a user interface
        
        User interface ( controls how users enter data and instructions and how information is displayed on the screen.
        
        2 techniques of user interface
        
        Graphical User Interface (GUI): 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.
        
        Command line user interface: User types command language represented by short keywords or abbreviations to enter data and instructions.
        Disadvantage: Difficult to use since user have to type the exact spelling and punctuations.
      - Manage Programs
        
        Some OS which are multitasking allows user to run multiple
        programs concurrently
        
        Example: Email
        program and web browser open all the time while working with other application such as word processing or graphic software.
      - Manage memory
        
        Function:
        To optimizes the use of RAM
      - Monitor performance
        
        Function to assess and
        reports information about various computer resources
        and devices.
        
        For example, users can
        monitor the processor, drives, network and memory usage.
      - Establish an Internet connection
        
        Function to provide a means to establish an Internet
        connections.
      - Providing File, Disk and System management tools
        
        Operating systems often provide users with the capability of:
      - 8.Control a network
        
        Function to organize and coordinate how multiple users access and share resources on a network.
        
        Examples of sharing resources: printer, Internet access, files and programs
- - - - Antivirus program is a utility program that protects a
        computer against malware such as virus, worm and Trojan horse.
        
        Function: To protect a computer against viruses by identifying and removing any computer viruses found in memory, on storage media or on incoming files.
      - Examples of
        antivirus program;
        
        Kaspersky Antivirus
        
        Avira Antivirus
    - - Spyware remover is a utility program that detects and
        deletes spyware and is a program placed on a computer without the user’s knowledge that secretly collects information about the user.
        
        Function of spyware remover: to detects and deletes
        spyware.
      - Examples of
        Spyware Remover:
        
        Spyware Protection
        
        SpyHunter
    - - Adware remover is a utility program program that detects and
        deletes adware and 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 of adware remover; to detects and deletes
        adware.
      - Examples of
        Adware Remover;
        
        Adw Cleaner
        
        Bitdefender
    - - Compression tool is a utility program that shrinks the size of
        files
        
        Function of compressing file to shrink size of a file.
        Files are compressed to;
        
        free up space on storage media
        
        attach in email
      - Examples of
        compression tools
        
        WinZip
        
        WinRAR
    - - Disk cleanup is a utility program that searches for and
        removes unnecessary files.
        
        Functions to search for and removes unnecessary files
        such as;
        i. Downloaded program files
        ii. Temporary internet files
        iii. Deleted files
        iv. Unused program files
      - Examples of
        disk cleanup;
        
        Windows Disk Cleanup
        
        Avast Cleanup Premium
    - - 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 of disk defragmenter: to reorganizes files and unused space on a hard disk for optimal efficiency.
      - Examples of
        Disk Defragmenter
        
        Win Contig
        
        MyDefrag
    - - A file manager is a utility that performs functions related to
        file management.
        
        Functions helps user to keep track of files and folders such as
        i. display a list of files
        ii. organize files in folders
        iii. copy, rename, delete, move, and sort files
        iv. create shortcuts
      - Examples of file manager:
        
        Windows Explorer
        
        Finder
    - - Function of back-up utility: Allow users to copy selected files or the entire hard disk to another storage medium.
        
        Function
        of restore utility: Restore data from a backup to the original storage location or to a replacement device.
      - Examples of
        back up and restore utility
        
        IDrive
        
        iCloud Backup