System Software The McGraw-Hill Companies, Inc. All rights reserved.

Transcription

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2 Describe the differences between system software and application software. Discuss the four types of system software. Discuss the basic functions, features, and categories of operating systems. Describe Windows, Mac OS, UNIX, Linux, and virtualization. 5-2

3 Describe the purpose of utilities and utility suites. Discuss mobile operating systems including Symbian, Blackberry OS, ios, Android, Windows Phone 7, and WebOS. Identify the five most essential utilities. Discuss Windows utility programs. Describe device drivers, including Windows Add a Device Wizard and Update. 5-3

4 Computers are ubiquitous in our lives and we expect them to be there when we need them. We give little thought to the processes and programs running behind the scenes to keep them functioning effectively. Such programs (i.e. operating systems, utility programs, and device drivers) are the system software you learn about here. 5-4

5 Handles the technical details Includes the operating system, utilities, device drivers, and language translators 5-5

6 A collection of programs that handle technical tasks Manage resources Provide user interface Run applications Examples: Windows 7 Mac OS X Also called the software environment or platform 5-6

7 Manages computer resources Coordinate memory, processing, storage, printers and monitors Monitor system performance Schedule tasks Provide security Start-up the computer Provides user interface Graphical user interface (GUI) Runs applications Multitasking Foreground and background applications 5-7

8 Booting Features in common with application software Icons Pointer Windows Menus Tabs Dialog boxes Help 5-8

9 Three basic categories Embedded operating systems (handheld) Smartphones Cable TV tuner boxes Video game systems Network operating systems (linked computers) Windows Server Unix OS stored on network server which coordinates all communication between the other computers Stand-alone operating systems (desktop) Also called client operating system 5-9

10 The OS is often called the software environment or platform Operating systems commonly used by individuals Windows most widely used Mac OS powerful and easy to use UNIX network; originally designed for Web LINUX non proprietary; free from the Web 5-10

11 The most popular microcomputer operating system Over 90 percent of the market Windows 7 provides several improvements over Windows Vista Return 5-11

12 Mac OS X runs on Apple computers Popular with graphic designers and desktop publishers Features include Spotlight Dashboard Widgets Boot Camp 5-12

13 Mac OS v also known as Lion Photo-quality icons and easy-to-use menus Launchpad Displays and provides access to all apps installed Mission Control Displays all running programs at one time Gestures Allow you to use your fingers to run programs and to control content on the screen Return 5-13

14 UNIX operating system Servers on the Web Mainframe computers Microcomputers Return 5-14

15 LINUX - version of UNIX Alternative to windows Open source Not proprietary Google Chrome OS based on Linux Return 5-15

16 Ability to support multiple operating systems on a single physical machine Virtualization software Physical machine can be logically separated into separate and independent virtual computers called virtual machines Host operating system Guest operating system 5-16

17 Mobile OS Embedded operating system in every smartphone Some of the best known Symbian BlackBerry OS or RIM OS ios Android Windows Phone 7 WebOS 5-17

18 Specialized programs to make computing easier Most essential utilities Troubleshooting or diagnostic programs Antivirus programs Uninstall programs Backup programs File compression programs 5-18

19 Backup and Restore Disk Cleanup Disk Defragmenter 5-19

20 Utility program included with many Windows versions Makes a copy of all files or selected files that have been saved on a disk Helps prevent against loss of data in the event of a disk failure Return 5-20

21 Identifies and eliminates nonessential files Frees up valuable space and improves system performance Return 5-21

22 Identifies and eliminates unnecessary fragments Rearranges files and unused disk space to optimize operations Speeds up file access Return 5-22

23 Combine several programs into one package Less expensive Popular suites Norton 360 McAfee Office V Communications SystemSuite 5-23

24 Allow communication between a device and the computer Loaded into memory each time a computer is started When a new device is added, new device drivers must be installed Windows already has many drivers within the system software 5-24

25 Security Center Continually monitors your computer VirusScan Controls the frequency of searches for viruses Quarantines or deletes infected files PersonalFirewall Monitors inbound and outbound traffic SiteAdvisor Protects privacy online 5-25

26 Computer support specialist provide technical support to customers and other users Resolve common networking problems and use troubleshooting programs to diagnose problems Employers look for a bachelors degree, good analytical and communication skills Computer support specialist can expect to earn $32K - $53K annually 5-26

27 IBM s Automatic Computing Initiative (ACI) Handles time-consuming maintenance Self-regulating and virtually invisible Self-maintaining servers Self-repairing Self-updating Self-protecting 5-27