Software

Software

1. OS

   • An operating system lets you interact with the computer
     • I determines what your computer is able to do
   • Some Examples
     • Microsoft Windows
     • Mac OS
   • What does it do?
     • Tranfers data around system
     • Visual Display
     • Controls Hardware
     • Runs Aplications
   • Operating System

2. GUI

   • Graphical User Interface
   • Parts
     • Windows
     • Icons
     • Menus
     • Pointer
     • Desktop
     • D WIMP
   • An operating System which contains graphics and icons
     • Usually navigated by a mouse
   • GUI interfaces are easier to use than Command-Line Interfaces and so have become the usual type of operating system that people use.
   • Smart phones use GUI

3. CLI

   • Command Line Interface
   • Requires commands to be typed on the keyboard
   • Can be complicated so shortened (abbreviated)
   • Take shorter time to type
     • But longer time to learn
       • NOT USER FRIENDLY

4. Multi users

   • So several people can use a computer with out rebooting every time

5. Multi Tasking

   • Computers can work on more than one process at a time

6. Secruity

   • The operating system must not only allow different processes and user to use the system but it must prevent them from clashing or the wrong user gaining access to another user’s private files.
   • It does this by dividing memory into sections and keeping log of what users and processes are being used

7. Main Operating Systems

   • Most computers use Microsoft windows
   • Some Examples
     • UNIX
     • Linux
     • MAC OS
     • iOS
     • Android

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