© 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Chapter 4B Mobile Gear

2 2 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Learning Objectives 4.4Explain the basic configuration of a notebook computer 4.5 Contrast tablets and smart phones, and explain the primary advantages of each type of computer 4.6 Describe the way that a wi-fi device connects to the Internet 4.7Explain how shared storage and cloud services can help minimize the amount of data you need to carry with you in your computer

3 3 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Mobile Devices Portable computers: self- contained units with keyboard, monitor and system combinedPortable computers: self- contained units with keyboard, monitor and system combined Convergence: process where devices or applications with different initial purposes become more alikeConvergence: process where devices or applications with different initial purposes become more alike Mobile devices include:Mobile devices include: –Notebooks (laptops) –Netbooks

4 4 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Notebooks Attempt to provide all the programs and functions of a desktop environmentAttempt to provide all the programs and functions of a desktop environment Advantages over desktops:Advantages over desktops: –Portability –Battery doubles as an uninterruptible power supply Network connection portsNetwork connection ports –Wired –Modem –Wireless HDMI port : sends a signal to digital televisionHDMI port : sends a signal to digital television

5 5 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Notebook Power Management Generally designed to run from one batteryGenerally designed to run from one battery Notebook batteriesNotebook batteries –Size/capacity measured in cells, the sections of the battery that hold power to be distributed –Batteries with more cells last longer Hot swapping: Removing a battery and replacing it with another one while the computer is running and plugged into the wallHot swapping: Removing a battery and replacing it with another one while the computer is running and plugged into the wall

6 6 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Notebook Power Management Battery life determinants:Battery life determinants: –Number of cells –Hardware configuration –Power management settings –What the computer is doing Managing power settingsManaging power settings –Power plan: Lists various settings for the computer to use on battery or wall power

7 7 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Netbooks Nearly notebooks:Nearly notebooks: –Screen size: 9 to 10 inches, versus 13 to 22 for a notebook screen –CPU typically less powerful –Memory and hard drive capacity tend to be less than in notebooks –Usually lack DVD drive and have fewer input/output ports Operating systemOperating system –Windows 7 Starter: a reduced-feature version of Windows 7 that lacks many personalization features

8 8 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Netbooks Advantages:Advantages: –Price about half the price of a basic notebook –Consume less power –Sufficient OS and hardware –Practical for computing where work space is limited –Full functionality of wireless connectivity Google ChromebookGoogle Chromebook –Relies heavily on cloud services –Programs and data files reside on Google’s cloud servers

9 9 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Handheld Devices Tablet computersTablet computers Smart phonesSmart phones

10 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Tablet Computers InputInput –Touch-sensitive screen –Virtual keyboard –Convertible tablets: Tablet computers that contain a keyboard attached by a special hinge Processor, drives, monitor similar to notebooksProcessor, drives, monitor similar to notebooks Competing versions include:Competing versions include: –Apple's iPad –Motorola's Xoom

11 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Smart Phones Predecessors:Predecessors: –PDAs (PDA technology later merged with cell phones) –Psion Organiser: Released in 1984 and marketed as “the world’s first practical pocket computer” –Apple Newton MessagePad: Released in 1993 Common smart phone models:Common smart phone models: –BlackBerry –iPhone

12 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Smart Phones Modern hardware:Modern hardware: –Dual-core processors –Active-matrix organic LED screens for reduced power usage –Motion and proximity sensor –Bluetooth: short-distance communication between devices Operating systemsOperating systems –Android –Symbian –Apple iOS –Windows

13 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Choosing a Device Features of mobile products overlap somewhat:Features of mobile products overlap somewhat: –Calendar and appointment systems –Phone calls on smart phones and on notebook computers via Voice over Internet Protocol (VoIP) programs Choose a type of device based on how you will use it:Choose a type of device based on how you will use it: –Light-duty mobile computing tasks suitable for a handheld –Services requiring features of a notebook

14 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Network Providers Make network access available free or for a feeMake network access available free or for a fee Cellular service providers:Cellular service providers: –Impose restrictions that make it more difficult to switch to another company –Often lock phones –Most do not provide direct Internet access Internet service providers (ISPs)Internet service providers (ISPs) –WiMAX: Telecommunications protocol –The hardware for sharing an Internet connection is a router

15 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Network Providers Router installationRouter installation –Router’s IP address : numbers that identify the router on the network –SSID : name that identifies the wireless router –Unsecured connection: anyone within range can simply connect and gain access –WEP: An encryption method included in router setup to support old networks –WPA2: An encryption method that provides better protection

16 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Storage on the Home Network For users with a small set of computersFor users with a small set of computers Advantages:Advantages: –Cuts storage costs, increases access to data, and improves data security –Any computer on the network can access the data –Only one copy of each file is needed Drawbacks:Drawbacks: –Cost for the extra hardware –User must make sure the server is running whenever data may be needed

17 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Cloud-based Storage Advantages:Advantages: –No hardware required –Some services provide limited data storage for free –Costs may be reasonable for the benefits provided Risks :Risks : –Theft –Impossible to be absolutely certain data will be completely unavailable to intruders

18 © 2013 by the McGraw-Hill Companies, Inc. All rights reserved. Cloud-based Storage Example: CarboniteExample: Carbonite –Automatic data backup –Data can be retrieved at the company’s website –Data sharing is simple –Collaboration tools are minimal Cloud services that enable greater collaboration:Cloud services that enable greater collaboration: –Windows Live SkyDrive –Dropbox –Google Docs