6 os.ppt compatibility mode

7/27/2019 6 OS.ppt Compatibility Mode

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Learning Outcomes

Pada akhir pertemuan ini, diharapkan mahasiswa

akan mampu :

menguraikan jenis dan fungsi sistem

operasi pada komputer

2


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Outline Materi

Operating Systems Function

Types of Operating Systems

Utility Programs

Stand-Alone Utility Programs

3


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System Software

What is system

software?

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Programs that control

the operations of thecomputer

Serves as the interface

between the user, the

application software,

and the computers

hardware


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Operating Systems

What are the functions of an operating

system?

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monitor

performance

provide a user interface

provide file

management and

other utilities

establish an

Internet connection

control a

network

administer

security

start the computer manage programs

schedule jobs and

configure devices

manage

memory


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Operating System Functions

What is booting?

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Cold boot

Turning on

computer that hasbeen powered off

Warm boot

Restarting

computer that is

powered onWarm boot from Windows

desktop

Warm boot from system unit

Process of starting or restarting a computer


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What messages display on thescreen when you boot the computer?

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How does a personal computer boot up?

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Step 1. Power supply

sends signal to com-

ponents in system unit

Step 4. Results of POST are

compared with data in CMOS chip

Step 2. Processor

accesses BIOS to start

computer

Step 3. BIOS runs tests,

called the POST, to

check components such

as mouse, keyboard,

and adapter cards

Step 5. BIOS looks for system files

in floppy disk drive or CD/DVD

drive, and then hard disk

Step 6. Kernel (core) of operating

system loads into RAM

Step 7. Operating system loads

configuration information and

displays desktop on screen


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What is a user interface?

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command-line interface menu-driven interface

Controls how you enter data and instructions and how

information displays on screen


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What is a graphicaluser interface (GUI)?

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User interacts with

menus and visual

images such as iconsand buttons


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What is single user/multitasking?

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Foreground contains

program you are using

Background contains

programs that arerunning but are not

in use

Working on two or

more programs that

reside in memory atsame time


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How does an operating system schedulejobs?

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Transferring itemsTransferring items

between storagebetween storage

and memoryand memory

SendingSending

informationinformation

to output deviceto output device

ProcessingProcessinginstructionsinstructions

Receiving dataReceiving data

from input devicefrom input device

Adjusts schedulebased on

jobs priority

AAjobjob is operationis operation

the processor managesthe processor manages


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What is spooling?

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Sending print jobs to buffer instead of

directly to printer

Print jobs line up in queue


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What is a device driver?

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DeviceDevice

DriverDriver

Program thatProgram thattells operating systemtells operating system

how to communicatehow to communicate

with devicewith device

WithWith Plug and PlayPlug and Play,,operating systemoperating system

automatically configuresautomatically configures

new devices as younew devices as you

install theminstall themAlso calledAlso called driverdriver


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What is a network operating system?

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Allows users to share printer, Internet

access, files, and programs on a network

Administers security

by establishing username and password for

each user


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pera ng ys em y

Programs

What is a utility program?

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System software that performs

maintenance-type tasks

Also called

utility


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pera ng ys em y

Programs

What is a file manager?

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Performs functions such as copying, renaming,

deleting, and moving files

Image viewer

displays contentsof graphics file

when you double

click on it


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pera ng ys em y

Programs

What is an uninstaller?

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In Windows XP,In Windows XP,

uninstaller is in Add/Removeuninstaller is in Add/Remove

Programs in Control PanelPrograms in Control Panel

Removes aRemoves a

program andprogram and

all associated filesall associated files


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pera ng ys em y

Programs

What is a disk scanner?

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Detects and corrects problems on

hard disk or floppy disk

Searches for and removes

unnecessary files


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pera ng ys em y

Programs

What is a backup utility?

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Copies selected files or entire hard disk onto

another disk or tape

Most compress files

during backup torequire less storage

space


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pera ng ys em y

Programs

What is a screen saver?

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Causes monitors screen to display moving

image or blank screen if there is no activity

for a specified time

To secure computer,user configures screen

saver to require

password to

deactivate


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What are some characteristics of operating

systems?

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Device-

dependentRuns only on specifictype of computer

Downward

compatibleWorks with application

software written for

earlier version of

operating system

Upwardcompatible

Runs on new versions of

operating system

Proprietary

softwarePrivately owned and

limited to specific vendor

or computer model

Device-

independentRuns on manymanufacturers

computers


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What are three categories of operatingsystems?

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StandStand--alonealone

EmbeddedEmbedded NetworkNetwork


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an - one pera ng

Systems

What is DOS (Disk Operating System)?

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DD

Developed inDeveloped in

early 1980searly 1980s

for personalfor personalcomputerscomputers

OO

Used commandUsed command--lineline

interface when firstinterface when first

developed, laterdeveloped, later

included menusincluded menusSSHardly used todayHardly used today

because it doesbecause it doesnot offer GUInot offer GUI


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an - one pera ng

Systems

How do Windows versions compare?

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Windows Version Year Released

Windows 3.x 1990

Windows NT 3.1 1993

Windows 95 1995

Windows NT Workstation 4.0 1996

Windows 98 1998

Windows Millennium Edition 2000

Windows 2000 Professional 2000

Windows XP 2001


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an - one pera ng

Systems

What is Windows XP?

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Microsofts fastest, most reliable Windows

operating system

Available in five

editions:Home Edition,

Professional Edition,

Tablet PC Edition,

Media Center Edition,

and 64-bit Edition


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an - one pera ng

Systems

What is Mac OS X?

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Available only for computers manufactured

by Apple

Macintosh operating

system has beenmodel for most GUIs


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an - one pera ng

Systems

What is UNIX?

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Used by power users because of its flexibility

and power

Most versions

offer GUI Both a stand-alone

and a network

operating system


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an - one pera ng

Systems

What is Linux?

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Red Hat provides a version of Linux called Red Hat

Linux. The GNOME graphical user interface is shown

in this example.

Popular, free, multitasking UNIX-type

operating system

Open-source softwaree

code is available topublic

Both a stand-alone

and a network

operating system


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Embedded Operating Systems

What is an embedded operating

system?

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Found on most mobile

computers, PDAs, and other

small devices Windows CE .NET is

scaled-down version of

Windows


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What are two operating systems for PDAs?

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Windows Mobile 2003 for Pocket PC

Palm OS for Palm, Visor, and CLIE


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What is Symbian OS?

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Open-source, multitasking operating system

designed for smart phones

Make telephone calls,

save appointments,browse Web, send

and receive e-mail

and faxes, and more


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Source : Shelly, Gary B. DiscoveringComputers (2004/2005/2006). Thomson

Course Technology. PPT for Chapter 8.

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