Operating Systems

Operating Systems

1. Functions

   • Interface - provides a user interface so it is easy to interact with the computer
   • manages the CPU - runs applications and executes and cancels processes
   • multi-tasks - allows multiple applications to run at the same time
   • manages memory - transfers programs into and out of memory, allocates free space between programs, and keeps track of memory usage
   • manages peripherals - opens, closes and writes to peripheral devices such as storage attached to the computer
   • organises - creates a file system to organise files and directories
   • security - provides security through user accounts and passwords
   • utilities - provides tools for managing and organising hardware

2. Examples

   • Mac OS X
   • Linux
   • Windows
   • Andriod
   • IOS

3. GUI Common Features

   • Icons/Menus