Operating systems

A collection of programs that manages the hardware and software of a computer system. Including sharing the computer's memory, hardware and other resources.
File management
1. Creates a file system to organise files and directories
  1. Hierarchy of directories
Hardware management
1. Manages peripherals- opens, closes and write to peripheral devices such as storage attached to the computer
  1. Drivers are software that allow us to use the actual hardware components.
2. manages memory - transfers programs into and out of memory, allocates free space between programs, and keeps track of memory usage.
User management
1. User interface
  1. Command line
    1. An OS also provides a method of interaction that is non-graphical, called the command line interface (CLI). This is a text-only service with feedback from the OS appearing in text
  2. Graphical user interface (GUI)
    1. The OS on most computers and smartphones provides an environment with tiles, icons and/or menus.
2. Security-provides security through user accounts and passwords.
Process management
1. manages the CPU - runs applications and executes and cancels processes
2. multi-tasks - allows multiple applications to run at the same time
Utilities software
1. Deleting data
2. Anti-virus software
3. Software updates

Resource summary

	Created by Holly Dooley over 6 years ago