Computer Literacy for IC 3 Unit 1: Computing Fundamentals © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.1 Chapter 5: Identifying Operating System Functions

Learning Targets 26.I can identify the purpose and functions of an operating system 27.I can identify the capabilities, limitations, and common problems of an operating system 28.I can identify functions of the Control Panel 29.I can use the Control Panel 30.I can install software 31.I can identify common installation problems 2© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Operating System vs. Application Program Operating system Environment Works with processor and other hardware © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.3 Application program Uses operating system programs Performs specific tasks Write a document Create a spreadsheet Edit a photograph

Types of Operating Systems Mainframe operating systems UNIX Personal computer operating systems DOS (text-based) Microsoft (MS-DOS) and IBM (PC-DOS) Graphical user interface (GUI) Windows, Apple, and Linux Tablet computer operating systems Usually same OS as desktop computers 4© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Additional Operating Systems Personal digital assistant Palm OS Microsoft, Apple, Linux have special OS versions Smartphones and cell phone operating systems Symbian, most common Windows Mobile, RIM Blackberry, iPhone OS 5© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Additional Operating Systems Embedded Used in computer appliances and special-purpose applications ATM machines Media players Automobiles Computer routers 6© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Using Multiple Operating Systems Dual boot Option of different operating systems when power computer on Macintosh computers » Mac OS and Windows PCs » Windows and Linux © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.7

Differences Between CLI and GUI CLI – Command-Line Interface Interact with operating system via keyboard DOS and UNIX GUI – Graphical-User Interface Has become the standard Windows, Macintosh OS © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.8

9 CLI DOS example GUI Mac example

OS Limitations Imposed Filenames DOS – 8.3 convention Windows 95 & newer 255 characters names Typical 3-character file extension Mac (Apple) – long filenames without extensions Application software Usually platform specific Extensible Markup Language (XML) – allows document transfer between platforms 10© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Common OS Problems Corrupted Files Noticeable slowdown System restore or recovery disks See if you can figure out why Got a virus? » Restore will help Hard drive failing? » Restore will not help Back up data soon! 11© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Common OS Problems Security Failure to install update Solution - check for Windows updates automatically Unusual hardware combinations Hardware, drivers, and peripherals do not always work smoothly together Improper logon procedures Inexact match of username and password Capitalization and spaces 12© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Windows Updates © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.13 Updates set to install automatically Specify day and time of automatic updates

Functions of the Control Panel Windows uses Control Panel to organize user preferences Appearance of the screen Behavior of input devices Add and remove software Set up printers Add users Activate automatic updates 14© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Windows Vista Control Panel Features 15© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Windows XP Control Panel Features 16© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Before Using the Control Panel Experimentation can lead to trouble Back up important data Create a restore point Use System Restore Create restore points when things are working 17© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Changing the Background © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.18 Change from this background To this background

Prior to Installing Software Need administrative privileges Need to install files CDs – Retail/burned Downloaded – Trial/shareware/freeware Are you legal? Copyright infringement is serious problem Fines can be issued Read software licensing agreements 19© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Installing Software – Need to Know Need privileges to install software Administrative privileges can install software Labs often prevent software installation End-user license agreement – EULA Single user license prevents installation on multiple computers used by different people at the same time © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.20

Installation from the Internet Pay for program license online Download Download directly or install file to your computer Best to download file in case something goes wrong © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.21

Common Installation Problems Lack of permission Security settings Partially uninstalled programs Damaged or lost installation discs 22© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Common Installation Problems Reinstalling registered software Installation program does not start automatically Installation stops Conflicts with other programs 23© 2010 Pearson Education, Inc. | Publishing as Prentice Hall.

Objectives Covered Identified the purpose and functions of an operating system Identified the capabilities, limitations, and common problems Identified functions of the Control Panel Used the Control Panel Installed software Identified common installation problems © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.24

Questions? © 2010 Pearson Education, Inc. | Publishing as Prentice Hall.25