operating systems

operating systems

1. functions

   • it manages the computers resorces such as the central processing unit, memory disk, drives and printew,
   • it estalishes the user interface
   • execute and provide services for applications software.
   • 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
   • security - provides security through user accounts and passwords
   • organises - creates a file system to organise files and directories
   • manages peripherals - opens, closes and writes to peripheral devices such as storage attached to the computer
   • utilities - provides tools for managing and organising hardware
   • manages memory - transfers programs into and out of memory, allocates free space between programs, and keeps track of memory usage