Changing the way you learn

Question	Answer
User Interface	OS provides a link between the user and computer Graphical User Interface - menus, icons, windows Command Line Interface - user types in commands
Memory Management	Manages amount of memory used by each application Without OS, applications wouldn't run, as not enough space
Peripheral Management	Co-ordinates the basic output and input systems Device Driver Software allows hardware to be used by OS
Multi-Tasking	OS allocates each program a slice of the CPU's time Also determines priority in which programs should use CPU Enables several programs to run on computer at once
Security	Prevents unauthorised access through usernames, passwords Protects files from being read or written by other users

Operating Systems

	Created by Kwame Oteng-Adusei almost 9 years ago