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Software unfinished (System Software (Examples of Operating Systems…

- - - - Transfers data between memory locations
      - Produces a visual display on screen
      - Controls peripherals
  - - - Most operating systems allow the user to type in commands(used in Unix)
      - Can make administering less effort as commands can be grouped together and run all at once
    - - Most personal computers and network consoles use it(used in smart phones)
      - Icons reduce the need to elarn commands but are less customisable
    - - Difficult to produce and is still under-developed
      - It is hard as their are many different accents, way of expression and speed of talking
  - - - Powerful proprietary multi-tasking operating system developed by Microsoft with a huge range of capabilities that go way beyond the original ideas of operating systems(provides a GUI)
      - All applications running under Windows look similar making it easier to learn(use a code that is part of Windows itself)
      - Many Windows features are stored in the Windows directory as Dynamic Linked Library files(DLL)
    - - Family of operating systems mostly found on high-end servers as well as on workstations
      - Command Line is traditionally used in Unix
    - - Apple computers come with their won proprietary operating system, which is a variation of Unix
    - - Proprietary system tat is not permitted to run on non-Apple products
      - Designed around a touch screen(dragging, pointing, pinching and reverse pinching)
    - - Designed to behave like Unix despite it being developed independently
      - Open source which means anyone has access to the source code and can modify it
      - Popular for running servers but are uncommon on desk top computers
  - - - A signal to the operating system to stop what is doing and perform a different task instead
      - Stops the operating system and tells t top stop running the current program and switch the CPU's attention to a different program looking after a peripheral