2.  It works with end users, application
software, and computer hardware to
handle majority of technical details.
 It enables the applications software to
interact with computer hardware
 Example :
- controls where a word processing
program is stored
in memory
-where a completed document or file is
saved.

3. OPERATING
SYSTEM
UTILITIES
TYPES OF
SYSTEM
SOFTWARE
DEVICE
DRIVERS
LANGUAGE
TRANSLATORS

4. Managing resources
~ coordinate all computer
resources
Providing user interface
*
Running applications
~ load and run
applications
~ monitor system
performance
~ support multitasking
~Provide security
~start up computer
FUNCTIONS

5. BOOTING SYSTEM
Warm Boot
~ the computer is on and
we restart it without turn
off the computer
Cold Boot
~ start a computer that
has turned off

6.  Desktop –provide access to computer resources.
 Several features in common with application
programs,include:
Icons
Pointer
Windows
Menus
Tabs
Dialog Boxes
Help
 Files and folders are used to store data and programs.

7. CATEGORIES
Used for handheld
devices
Stored within or
embedded in the
device
Permanently stored in
ROM,
Embedded
operating system
Control and
coordinate computers
that are networked or
linked together
Popular network :
-Windows Server
Control a single
desktop or
notebook computer
Located on
computer’s hard
disk
Network operating
system (NOS)
Stand-alone
operating system
or dekstop
operating system