CMPF124 Basic Skills For Knowledge Workers

Chapter 1 – Part 1Chapter 1 – Part 1

Introduction To Windows Operating Systems

Introduction To Windows Operating Systems

CMPF 112 : COMPUTING SKILLS

ObjectivesObjectives

• At the end of the lesson, you should be able to :– describe the concept and functions of an

operating system (OS)

– describe the 3 categories of OS

– differentiate among different versions of Microsoft Windows

What Is An Operating System ?What Is An Operating System ?

• Serves as intermediary between hardware and applications software

• Handles technical details without user intervention

• A Collection of programs– Systems software– Kernel– Utilities– Device drivers– Language translators

OS FunctionsOS Functions

• Determines which applications should run in what order and how much time should be allowed for each application before giving another application a turn (in multitasking OS).

• It manages the sharing of internal memory among multiple applications.

• It handles input and output process.• It sends messages to each application or interactive user about

the status of operation and any errors.• It can offload the management of what are called batch jobs so

that the initiating application is freed from this work (i.e. print spool).

• It can manage how to divide the program (in parallel processing).

Operating System CategoriesOperating System Categories

• Three basic categories

– Embedded OS• Used in handheld computers, Stored within device in Read-Only

Memory

• Windows CE (embedded compact), Palm OS, Android, Symbian, NetBSD

– Network OS Controls and coordinates linked computers

• Novell NetWare, Windows NT Server, UNIX,

WINDOWS Server 2012

– Stand-alone Desktop/ Personal Computer Operating system • Controls a single desktop or laptop computer• Client operating system• MS-DOS, Windows Vista, 7, 8, Mac OS X, Linux

MS-DOSMS-DOS

• Uses a command-line interface– Screen provides prompts for user– User types commands

• Not user-friendly

Microsoft WindowsMicrosoft Windows

• Most popular OS for personal computer

• Designed for INTEL processors

• Active Desktop– Graphical user interface

to OS

• Windows XP, Windows 2003, Vista, Windows 7, Windows 8

• Windows CE

Apple MacOSApple MacOS

• Runs on Macintosh computers

• Designed for PowerPC microprocessors

• OS X Mountain Lion ->Latest version OS

• First commercially successful GUI– Has served as the

model for Windows and other GUI products developed since then

UNIXUNIX

• Originally ran on mainframe

and minicomputers

• Used for large servers on

the Web

• Popular alternative to

Windows

• Several versions available

– Solaris 8

– Linux

Windows 98 GUI

copyright image from http://www.harding.edu/fmccown/gui/guitour.html

WINDOWS 98WINDOWS 98

Windows XP GUI

copyright image from http://www.harding.edu/fmccown/gui/guitour.html

WINDOWS XPWINDOWS XP

Windows Vista GUI

copyright image from http://www.harding.edu/fmccown/gui/guitour.html

WINDOWS VISTAWINDOWS VISTA

WINDOWS 7WINDOWS 7

Google Chrome OSGoogle Chrome OS