system

1. COMPUTER SYSTEM
2.6.1.1 SYSTEM SOFTWARE – OPERATING SYSTEM

2. SYSTEM SOFTWARE
 SOFTWARE – tells the computer what tasks to perform and
how to perform them
TYPE Application
Software
-word processing
-spreadsheet
-presentation
application
-database
-web browser
System
Software
-operating
system
- Utiility program

3. SYSTEM SOFTWARE

4. Types of Operating Systems
-windows
-mac OS x
-UNIX
-Linux
-Windows Server
2008
-UNIX
-Linux
-Solaris
-Netware
-windows
embedded CE
-Windows phone 7
-iphone OS
-Blackberry
-Android

5. 1.Stand Alone Operating system
 A stand alone operating system is a complete operating
system that works on a desktop computer, notebook or
mobile computing device
 Examples:
WINDOWS Mac OS x UNIX Linux

6. Windows
 Windows is Microsoft’s fastest , most efficient OS
 Windows provide programs such as :
-windows firewall
-windows DVD Maker
-windows media player
-desktop gadget gallery
 Windows is a Proprietary OS

7. Mac Os
 The MacIntoch operating system has set standard for OS
system ease of use
 Mac OS x is the lastest and proprietary OS

8. UNIX and Linux
UNIX
• Multitasking operating system
LInux
• Open-source , multitasking ,
popular

9. 2.Server Operating System
 To support a network
 Typically resides on a server
 Example:
Windows
server
2008
UNIX
Linux NetWare

10. 3.Embedded /mobile operating
 Resides on a ROM on a mobile device or consumer
electronic device
 Example :
Windows
embedded
CE
Windows
phone 7
Palm OS
BlackBerry Android

11. Operating System
 A set of programme containing instruction that work together
to coordinate all the activities among computer hardware
 Function of OS:
Start and
shut down
computer
Manage
memory
Manage
programs
Control a
network
Monitor
performance

12. 1.Start and shut down computer
 Called booting
Cold boot
• Turning on a
computer that
has been
powered off
completely
Warm boot
• Using the OS
to restart a
computer

13. 2. Manage memory
- Memory management optimizes the use of RAM
- OS allocates data and instruction to memory while
being process
- Monitor content of memory and release from
memory when the prosesscor no longer require
form
3.Manage programs
-single user
-multitasking
-multiuser
-multiprocessing
-preemptive multitasking

14. 4.control a network
Some OS designed to work with a server on a
network
A server OS organizes and coordinates how
multiple users access and share resources on a
network
5.Monitor performance
A performance monitor is a program that assesses
and report information about various computer
resources and devices .