operating systems

operating systems

1. role of an operating system

   • provide security and prevents unauthorised acess to a computer system
   • helps the user
   • allows users to load run and store applications also resolve errors occuring applications

2. Gui

   • what is a gui
     • a graphical user interface is an interfae which is built around graphics
     • examples include windows 7 ios 11 for i products

3. CLI

   • what is cli
     • cli is where a user can interact with a computer by writing command prompts
   • cli are normally used by expert users
   • cli is not restricted to a number of predetermined options
   • advantages
     • the user has more freedom
     • it is possible to alter computer settings
     • Disadvantages
       • user needs to learn commands
       • commands must be typed in without errors