Professor Michael J. Losacco CIS 1150 – Introduction to Computer Information Systems System Software Chapter 4

Chapter4 2/17 Overview Discuss the Types of System Software Describe Operating System Functions Describe Operating System Features Discuss Mobile Operating Systems Discuss Desktop Operating Systems Describe the Purpose of Utilities Describe Device Drivers 2

Chapter4 3/17 System Software Collection or System of Programs Handles Technical Details of Computer Types Operating System Utilities Device Drivers Language Translators 3

Chapter4 4/17 Operating Systems AKA Software Environment Examples: Windows 8, Mac OS X Group of Programs Coordinates Hardware Resources For All Computer Activities 4

Chapter4 5/17 Operating System Functions Manage Computer Resources Coordinate Memory, Processing, Storage Monitor System Performance Provide Security Start the Computer Provides User Interface 5

Chapter4 6/17 Operating System Functions Runs Applications Multitasking Switch Between Applications Running in Memory Multiuser Two or More Users Run Same Program Multiprocessing Multiple CPUs Running at Same Time Fault-tolerant Duplicate Components Hard Disk, Memory Can Operate Even if Component Fails 6

Chapter4 7/17 Operating System Features Booting Starting / Restarting Computer Cold Boot Turning on Computer from Off State Warm Boot Restarting Computer that is Already On 7

Chapter4 8/17 Operating System Features Booting Mechanics

Chapter4 9/17 Operating System Features Desktop Provides Access to Computer Resources Icons Pointer Windows Menus Tab Divide Menus into Major Activity Areas 9

Chapter4 10/17 Operating System Features Dialog Boxes Provide Information or Request Input Help Gesture Control Control Operations with Finger Movements Swiping, Sliding, Pinching Files Store Data and Programs Folder Stores Related Files 10

Chapter4 11/17 Operating System Categories Embedded Operating Systems Smartphones Cable TV Tuner Boxes Video Game Systems Network Operating Systems Control / Coordinate Networked Computers Stand-alone Operating Systems Control Single Computer 11

Chapter4 12/17 Mobile Operating Systems Embedded Operating System Types Android BlackBerry OS iOS Windows Phone 12 Gartner 2014

Chapter4 13/17 Desktop Operating Systems Windows 8 Mac OS X UNIX Linux Chrome OS Market Share Microsoft Windows90.7% Apple Macintosh 7.7% Linux 1.6% NetMarketShare 3/14

Chapter4 14/17 Virtualization Run Multiple OS on a Single Machine Requires Virtualization Software Configures Virtual Machines Treated as Separate Computers Host Operating System Guest Operating System 14

Chapter4 15/17 Utilities Programs to Make Computing Easier Types Diagnostic Antivirus Backup File Compression Disk Cleanup Disk Defragmenter 15

Chapter4 16/17 Device Drivers AKA Driver Allows Communication Between Device and OS Appropriate Drivers Automatically Installed For Most Devices Windows Update Automatically Updates Drivers 16

Chapter4 17/17 Careers in IT Support Specialist Provide Technical Support To Customers and Other Users Manage Everyday Technical Problems Resolve Common Networking Problems Advanced Associate's or Bachelor's Degree Good Analytical and Communication Skills Annual Salary of $31,000 - $58,000 17