OBJECTIVES :
Ø Define an operating system
Ø Describe the start-up process and shutdown options on computers and mobile devices
Ø Explain how an operating system provides a user interface, manages programs, manages memory, and coordinates tasks
Ø Describe how an operating system enables users to configure devices, establish an Internet connection, and monitor performance
Ø Identify file management and other tools included with an operating system, along with ways to update operating system software
Ø Explain how an operating system enables users to control a network or administer security
Ø Summarize the features of several desktop operating systems
Ø Briefly describe various server operating systems
Ø Summarize the features and uses of several mobile operating systems
Operating System
- set of programs containing instructions that work together to coordinate all the activities among computer and mobile device hardware
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FUNCTIONS
Starting Computers and Mobile Devices
ü If a computer or mobile device is off, you press a power button to turn it on.
User Interface (UI)
ü controls how you enter data and instructions and how information is displayed on the screen
Manage programs
ü Single tasking and multitasking
ü Foreground and background
ü Single user and multiuser
Manage memory
ü A driver is a small program that tells the operating system how to communicate with a specific device
Establish an Internet connection
Provide file management and other device or media-related tasks
ü File manager, Search, Image Viewer, Uninstaller, Screen Saver, File Compression, PC Maintenance
Automatic update
ü Provides new features or corrections to the program
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TYPES OF OPERATING SYSTEMS
Desktop
Server
Mobile
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Desktop Operating System
- complete operating system that works on desktops, laptops, and some tablets (Windows, Mac OS, UNIX, Linux)
Server Operating System
- Windows Server, OS X Server, UNIX, Linux
Mobile Operating Systems
Operating system on mobile devices and many consumer electronics
- Android - open source, Linux-based mobile operating system designed by Google for smartphones and tablets
- iOS - proprietary mobile operating system specifically made for Apple’s mobile devices
- Windows Phone - proprietary mobile operating system that runs on some smartphones by Microsoft
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