CHAPTER 9

CHAPTER 9: OPERATING SYSTEM

OPERATING SYSTEM (OS)

- A set of programs containing instructions that work together to
  coordinate all the activities among computer and mobile device
  hardware

Start and shut down a computer or mobile device

Provide a user interface

Provide file management and other device or media-related task

Coordinate tasks

Establish an Internet connection

Updating operating system software

Control a network

Monitor performance

Manage memory

Administer security

OPERATING SYSTEM FUNCTIONS

• User Interface (UI)

          - Controls how to enter data and instructions and how 

            information is displayed on the screen

• The operating system determines the order in which tasks are processes

• Driver

          - A small program that tells the operating system how to 

            communicate with a specific device

• Provide a means to establish Internet connections

• Provide users with a variety of tools related to managing a computer, its devices or its programs

          -File Manager

          -Disk Defragmenter

          -Search

          -File compression

          -Screen saver

          -Image viewer

          -Uninstaller

          -PC Maintenance

          -Dick Cleanup

          -Backup and Restore

• Automatic update

          - Automatically provides new features or corrections to the 

            program

• User account

          - Enables a use to sign in to, or access resources on, a network 

            or computer

TYPE OF OPERATING SYSTEM

DESKTOP OPERATING SYSTEM

- A complete operating system that works on desktops, laptops and 

  some tablets

   

   Ex: Windows, Linux, Mac OS, Unix

• Windows 8 features:

          -Start screen interface with tiles

          -Includes the desktop interface

          -Support for input via touch, mouse, and keyboard

          -Email app, calendar app, and browser included

          -Enhanced security through an antivirus program, firewall, and 

           automatic updates

          -Windows Store offers additional applications for purchase

• The Macintosh operating system has earned a reputation for its ease of use

• UNIX is a multitasking operating system developed in the early 1970
• Linux is a popular, multitasking UNIX-based operating system

MOBILE OPERATING SYSTEM

• Android

          - An open source, Linux-based mobile operating system 

            designed by Google for smartphones and tablets

• Windows phone

          - Developed by Microsoft, is a proprietary mobile operating 

            system that runs on some smartphones

• iOS

          - Developed by Apple, is a proprietary mobile operating system 

            specifically made for Apple’s mobile devices