Please enable JavaScript.

Coggle requires JavaScript to display documents.

2.6 Software 2.6.1 System Software (Operating System (Functions of OS…

- - - - Two types of booting:
        – Cold boot is the process of turning on computer
        that has been powered off completely.
        – Warm boot is the process of using the operating
        system to restart a computer
      - The process of starting or restarting a
        computer is called booting
      - – Sleep mode saves any open documents and
        programs to RAM, turns off all unneeded
        functions, and then places the computer in a lowpower
        state
      - Hibernate saves any open documents and
        programs to a hard disk before removing power
        from the computer
    - - User interface is the part of OS that controls
        how users enter data and instructions and
        how information is displayed on the screen.
      - Command-line interface
        – user types commands on the keyboard to give
        instructions.
        – Disadvantage: Difficult to use since user have to
        type the exact spelling and punctuations
      - 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 or icon
    - - OS allows user to easily switch between the
        programs by clicking at the program button at
        the taskbar.
    - - OS allocates data & instructions to memory
        while being processed, monitors the contents
        of memory, and release the contents from
        memory when the processor no longer
        requires them
    - - determines the order in which tasks are
        processed
    - - • OS will configure any new device added to the
        computer so that it can work with the
        computer.
        • Program that tells OS how to communicate
        with a specific device is called a device driver.
        • With Plug and Play feature, OS can
        automatically configures new devices as you
        connect them
    - - • OS provides a means to establish Internet
        connection.
        • Some OS may automatically detects and
        configures some broadband connections.
        • Otherwise, OS provides a network set up
        wizard that guides user to make a connection
        to the Internet.
    - - A performance monitor is a program that
        assesses and reports information about
        various computer resources and devices such
        as processor, disk, memory and network
        usage
    - - • OS allows users to manage files such as to
        – save, copy, move, delete, search,and sort files.
        • OS also provide built-in utilities such as
        – uninstalling programs,
        – cleaning up disks,
        – defragmenting disks, or
        – backing up files and disks
    - - Automatic update feature in OS automatically
        provides updates to the program.
        • Updates include:
        – Fixes to program bugs (error)
        – Enhancements to security
        – Modifications to device drivers
        – Access to new components such as desktop
        themes or games
    - - • A server OS organizes and coordinates how
        multiple users access and share resources on a
        network
      - For example, a server OS allows multiple users
        to share a printer, Internet access, files, and
        programs.
    - - OS provides setting to create user account and
        and establish permissions to resources.