1. © 2007 Prentice-Hall, Inc.1 Technology In Action

2. © 2007 Prentice-Hall, Inc.2 Technology In Action Chapter 8 Mobile Computing: Keeping Your Data on Hand

3. © 2007 Prentice-Hall, Inc.3 Topics Advantages and limitations of mobile computingAdvantages and limitations of mobile computing Mobile computing devices:Mobile computing devices: –Pagers –Cell phones –PDAs –MP3 players Synchronizing mobile devices with computersSynchronizing mobile devices with computers Tablet PCsTablet PCs LaptopsLaptops

4. © 2007 Prentice-Hall, Inc.4 Mobile Computing: Is it Right for You? Advantages ConvenienceConvenience Boost productivityBoost productivity Communicate with others anywhereCommunicate with others anywhere Access to electronic informationAccess to electronic information Limitations Expensive Battery life Small screen display Slow Internet speed

5. © 2007 Prentice-Hall, Inc.5 Mobile Computing Devices PagersPagers Cellular phonesCellular phones MP3 playersMP3 players Personal digital assistantsPersonal digital assistants Tablet PCsTablet PCs Laptop computersLaptop computers

6. © 2007 Prentice-Hall, Inc.6 Comparing Mobile Devices Mobile Devices: Price, Size, Weight, and Capabilities Device Relative PriceApproximate Size Approximate Weight Standard Capabilities Paging Device $ (includes cost for the pager and a monthly plan) 2" × 2" × 0.5"0.2 lbs.Provides numeric and/or text messaging in one or two directions Cell Phone $$ (includes cost for the phone, a monthly plan, and Internet access) 5" × 2" × 0.5". 0.25 lbsProvides voice and e-mail connectivity MP3 Player $$–$$$3" × 2" × 1"0.25 lbs.Provides storage of digital music files and other data PDA $$–$$$5" × 3" × 1"0.5 lbs.Provides PIM capabilities, access to application software, and access to the Internet Tablet PC $$$$$10" × 8" × 1"3 lbs.Provides PIM capabilities, access to application software, access to the Internet, and special handwriting and speech-recognition capabilities Laptop $$$$–$$$$$10" × 13" × 2"5 to 8 lbs.Provides all the capabilities of a desktop computer while also being portable

7. © 2007 Prentice-Hall, Inc.7 Paging Devices Small wireless devices that receive numeric messages (phone numbers)Small wireless devices that receive numeric messages (phone numbers) Recent technological advancements enable:Recent technological advancements enable: –Voice paging: Receiving voice messagesReceiving voice messages –Alphanumeric paging: Receiving numeric and text messagesReceiving numeric and text messages –Two-way paging: Receiving and sending text messagesReceiving and sending text messages

8. © 2007 Prentice-Hall, Inc.8 Cellular Phones Full-featured communication and information storage devicesFull-featured communication and information storage devices Features include:Features include: –Auto-redial –Call timers –Voice-mail –Voice-activated dialing –Internet access –Text messaging –Personal information management

9. © 2007 Prentice-Hall, Inc.9 Cell Phone Hardware Microprocessor (CPU):Microprocessor (CPU): –Coordinates data between components –Runs the operating system Memory:Memory: –ROM stores the operating system –Internal memory chips store: Contact dataContact data Ring tonesRing tones ImagesImages Small application programsSmall application programs Microprocessor Memory

10. © 2007 Prentice-Hall, Inc.10 Cell Phone Hardware Input devices:Input devices: –Microphone –Keypad –Graffiti pad –Touch-screen –Digital camera Output devices:Output devices: –Speaker –LCD display Microphone Keypad LCD display Speaker

11. © 2007 Prentice-Hall, Inc.11 Cell Phone Features Text messaging:Text messaging: –Short Message Service (SMS): Send messages up to 160 charactersSend messages up to 160 characters –Multimedia Message Service (MMS): Send text, sound, images, and video clipsSend text, sound, images, and video clips Internet connectivity:Internet connectivity: –Wireless Internet service provider –Maximum speed of 14.4 Kbps –Micro-browser software

12. © 2007 Prentice-Hall, Inc.12 MP3 Players MP3:MP3: –Format for storing music MP3 player:MP3 player: –A small device that stores and plays music Storage space determines the number of songs stored:Storage space determines the number of songs stored: –Memory chips 64 MB to 256 MB –Hard drive up to 40 GB –Sampling rate also affects number of songs stored number of songs stored

13. © 2007 Prentice-Hall, Inc.13 MP3 Flash Memory Used to add additional memory to MP3 playersUsed to add additional memory to MP3 players Types of flash memory:Types of flash memory: –Compact Flash: 64 MB to 1 GB64 MB to 1 GB –Multimedia (MMC) and SmartMedia: 128 MB128 MB –Secure Digital: 512 MB512 MB –Sony Memory Stick: 128 MB128 MB

14. © 2007 Prentice-Hall, Inc.14 MP3 Ethical Issues Is it illegal to download MP3 files?Is it illegal to download MP3 files? –MP3.com: Song files are on a public serverSong files are on a public server Permission is given by the artist or recording company to place the files on the serverPermission is given by the artist or recording company to place the files on the server A fee is paid to download a file.A fee is paid to download a file. –Napster: A file exchange siteA file exchange site Song files were borrowed from users’ computers (peer-to- peer (P2P) sharing)Song files were borrowed from users’ computers (peer-to- peer (P2P) sharing) Sued for copyright infringementSued for copyright infringement

15. © 2007 Prentice-Hall, Inc.15 Podcasting Distributing non-music MP3 files over the InternetDistributing non-music MP3 files over the Internet Podcasts can be information, books on tape audio plays, etcPodcasts can be information, books on tape audio plays, etc People can listen when they wishPeople can listen when they wish

16. © 2007 Prentice-Hall, Inc.16 Small devices that store digital informationSmall devices that store digital information Known as palm computers or handheldsKnown as palm computers or handhelds PDA hardware includes:PDA hardware includes: –CPU –Operating system –Storage capabilities –Input/output devices –Ports Personal Digital Assistants (PDAs)

17. © 2007 Prentice-Hall, Inc.17 PDA Input and Output Devices Input devices Touch-screen with stylusTouch-screen with stylus Keyboards:Keyboards: –On-screen –Integrated –Folding Digital camerasDigital cameras Output devices LCD displays: –Grayscale –Color

18. © 2007 Prentice-Hall, Inc.18 PDA Processors Popular processors:Popular processors: –Motorola DragonBall –Texas Instruments OMAP –Intel XScale Comparing processors:Comparing processors: –Speed –Performance: BenchmarkingBenchmarking –Power consumption

19. © 2007 Prentice-Hall, Inc.19 PDA Operating Systems Palm OS Uses less memory than Pocket PCUses less memory than Pocket PC Easy to use graphical interfaceEasy to use graphical interface Features include:Features include: –Calendar –To-do list –Contact information –Viewing Videos –Playing MP3 files Extra application software is availableExtra application software is available Pocket PC Scaled-down version of Windows More expensive than Palm OS Features include: –PDA version of Microsoft Word and Excel –Viewing videos –Playing MP3 files Extra application software is available

20. © 2007 Prentice-Hall, Inc.20 PDA Memory and Storage ROM stores the operating system and the basic programsROM stores the operating system and the basic programs RAM stores additional applications and dataRAM stores additional applications and data Flash memory is used for additional storageFlash memory is used for additional storage

21. © 2007 Prentice-Hall, Inc.21 PDA File Transfer and Synchronization PDA files can be transferred to a desktop using:PDA files can be transferred to a desktop using: –Flash card readers –Cradles Synchronizing updates files on both the PDA and desktopSynchronizing updates files on both the PDA and desktop Wireless transfers:Wireless transfers: –IrDA –Bluetooth

22. © 2007 Prentice-Hall, Inc.22 PDA Internet Connectivity An Internet connection requires a wireless ISPAn Internet connection requires a wireless ISP Web pages are accessed using Wireless Application Protocol (WAP)Web pages are accessed using Wireless Application Protocol (WAP) Web clipping enables information from Web pages to be formatted for PDAsWeb clipping enables information from Web pages to be formatted for PDAs

23. © 2007 Prentice-Hall, Inc.23 PDA Software and Accessories Standard software:Standard software: –To-do list –Contacts manager –Calendar Additional software:Additional software: –Microsoft Word and Excel –Games –Tools –References Blueboard: –PDA display acts as a drawing board –Connects to four other PDAs

24. © 2007 Prentice-Hall, Inc.24 Converged Technologies Cell phones with PDA capabilityCell phones with PDA capability PDAs with cell phone capabilityPDAs with cell phone capability Handspring TreoHandspring Treo Sony Erricson P800Sony Erricson P800

25. © 2007 Prentice-Hall, Inc.25 Tablet PCs Portable computers with handwriting recognition and speech recognitionPortable computers with handwriting recognition and speech recognition Two monitor modes:Two monitor modes: –Laptop –Tablet

26. © 2007 Prentice-Hall, Inc.26 Tablet PC Hardware Tablet PC hardware includes:Tablet PC hardware includes: –CPU –Storage capabilities –Input/output devices –Ports Digital ink technology:Digital ink technology: –Pressure sensitive screen –Digital pen

27. © 2007 Prentice-Hall, Inc.27 Tablet Software Windows XP Tablet PC is the operating systemWindows XP Tablet PC is the operating system Applications programs compatible with Windows XP are availableApplications programs compatible with Windows XP are available

28. © 2007 Prentice-Hall, Inc.28 Laptops Also known as notebooksAlso known as notebooks Computing power of a desktopComputing power of a desktop Weigh 6 poundsWeigh 6 pounds

29. © 2007 Prentice-Hall, Inc.29 Laptop Hardware DVD/CD-RW drivesDVD/CD-RW drives Hard drivesHard drives RAMRAM Hot-swappable bays:Hot-swappable bays: –Remove a drive and replace it with another type KeyboardKeyboard Built-in mouseBuilt-in mouse LCD displaysLCD displays

30. © 2007 Prentice-Hall, Inc.30 Laptop Operating Systems Same operating systems as those found on desktopsSame operating systems as those found on desktops Power management:Power management: –Shuts down the hard drive –Turns off the monitor –Puts the computer into standby mode

31. © 2007 Prentice-Hall, Inc.31 Laptop Ports A full set of ports:A full set of ports: –Parallel –Monitor –USB –Modem –Ethernet –Audio jacks –FireWire –PCI type I/II card slots

32. © 2007 Prentice-Hall, Inc.32 Chapter 8 Summary Questions What are the advantages and limitations of mobile computing?What are the advantages and limitations of mobile computing?

33. © 2007 Prentice-Hall, Inc.33 Chapter 8 Summary Questions What are the various mobile computing devices?What are the various mobile computing devices?

34. © 2007 Prentice-Hall, Inc.34 Chapter 8 Summary Questions What can pagers do?What can pagers do?

35. © 2007 Prentice-Hall, Inc.35 Chapter 8 Summary Questions How do cell phone components resemble a traditional computer and how do cell phones work?How do cell phone components resemble a traditional computer and how do cell phones work?

36. © 2007 Prentice-Hall, Inc.36 Chapter 8 Summary Questions What can I carry in an MP3 player and how does it store data?What can I carry in an MP3 player and how does it store data?

37. © 2007 Prentice-Hall, Inc.37 Chapter 8 Summary Questions For what can I use a PDA and what internal components and features does it have?For what can I use a PDA and what internal components and features does it have?

38. © 2007 Prentice-Hall, Inc.38 Chapter 8 Summary Questions How can I synchronize my mobile devices with my desktop computer?How can I synchronize my mobile devices with my desktop computer?

39. © 2007 Prentice-Hall, Inc.39 Chapter 8 Summary Questions What is a tablet PC?What is a tablet PC?

40. © 2007 Prentice-Hall, Inc.40 Chapter 8 Summary Questions How powerful are laptops and how do they compare to desktop computers?How powerful are laptops and how do they compare to desktop computers?