Defines

Purpose of this Presentation
To provide to instructors an overview of Chapter 5: List of chapter objectives

Chapter 5: p g y Operating Systems

Overview of the chapter contents, including
student worksheets student labs

Reflection/Activities for instructors to complete to prepare to teach IT Essentials: PC Hardware and Software v4.0 Additional resources

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Chapter 5 Objectives
5.1 Explain the purpose of an operating system 5.2 Describe and compare operating systems to include purpose, limitations, and compatibilities 5.3 Determine operating system based on customer needs 5.4 Install anoperating system 5.5 Navigate a GUI (Windows) 5.6 Identify and apply common preventive maintenance techniques for operating systems 5.7 Troubleshoot operating systems
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Chapter 5 Worksheets and Labs
5.2.2 Worksheet: NOS Certifications and Jobs 5.3.2 Worksheet: Upgrade Components 5.4.2 Lab: Install Windows XP 5.4.5Lab: Windows XP User Accounts and Updates 5.4.9 Worksheet: FAT32 and NTFS 5.5.1 Lab: Run Commands 5.5.4 Lab: Install Third-Party Software 5.6.2 Lab: Restore Point 5.6.3 Lab: Windows Backup and Recovery
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The Purpose of an Operating System
The operating system (OS) controls almost all functions ona computer. Learn about the components, functions, and terminology related to the Windows 2000 and Windows XP operating systems.

Roles of an Operating System
All computers rely on an operating system (OS) to provide the interface for interaction between users, applications, and hardware. The operating system boots the computer and manages the file system. system Almost all modern operatingsystems can support more than one user, task, or CPU. The operating system has four main roles:
Control hardware access Manage files and folders Provide user interface Manage applications

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Characteristics of Operating Systems
Control hardware access
OS automatically discovers and configures PnP hardware

The Types of Operating Systems
Command Line Interface (CLI): The user types commands at a prompt. Graphical User Interface (GUI): The user interacts with menus and icons.

File and folder management User interfaceCommand line interface (CLI) Graphical user interface (GUI)

Application management
Open Graphics Library (OpenGL) DirectX

Most operating systems include both a GUI and a CLI.
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Compare Operating SystemsTerms often used when comparing operating systems: Multi-user – Two or more users can work with programs and share peripheral devices, such as printers, at the same time. Multi-tasking The M lti t ki – Th computer is capable of operating t i bl f ti multiple applications at the same time. Multi-processing – The computer can have two or more central processing units (CPUs) that programs share.Multi-threading – A program can be broken into smaller parts that can be loaded as needed by the operating system. Multi-threading allows individual programs to be multitasked.
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Real Mode
Executes only one program at a time Addresses only 1 MB of system memory at a time Directly accesses memory and hardware j...