1. Mobile Computing Advantages and limitations of mobile computing
Mobile computing devices:
Pagers
Cell phones
PDAs
MP3 players
Synchronizing mobile devices with computers
Tablet PCs
Laptops
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2. Mobile Computing: Is it Right for You?
Advantages
Convenience
Boost productivity
Communicate with others anywhere
Access to electronic information
Limitations
Expensive
Battery life
Small screen display
Slower Internet speed
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3. Mobile Computing Devices
Pagers
Cellular phones
MP3 players
Personal digital assistants
Tablet PCs
Laptop computers
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4. Paging Devices
Small wireless devices that receive numeric messages (phone numbers)
Recent technological advancements enable:
Voice paging:
Receiving voice messages
Alphanumeric paging:
Receiving numeric and text messages
Two-way paging:
Receiving and sending text messages
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5. Cellular Phones
Full-featured communication and information storage devices
Features include:
Auto-redial
Call timers
Voic
Voice-activated dialing
Internet access
Text messaging
Personal information management
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6. Cell Phone Hardware Microprocessor (CPU): Memory:
Coordinates data between components
Runs the operating system
Memory:
ROM stores the operating system
Internal memory chips store:
Contact data
Ring tones
Images
Small application programs
Memory
Microprocessor
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7. Cell Phone Hardware Input devices: Output devices: Microphone Keypad
Graffiti pad
Touch-screen
Digital camera
Output devices:
Speaker
LCD display
Speaker
LCD display
Keypad
Microphone
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8. Cell Phone Features Text messaging: Internet connectivity:
Short Message Service (SMS):
Send messages up to 160 characters
Multimedia Message Service (MMS):
Send text, sound, images, and video clips
Internet connectivity:
Wireless Internet service provider
Maximum speed of 14.4 Kbps
Micro-browser software
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9. MP3 Players MP3: MP3 player:
Format for storing music
MP3 player:
A small device that stores and plays music
Storage space determines the number of songs stored:
Memory chips 64 MB to 256 MB
Hard drive up to 40 GB
Sampling rate
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10. MP3 Flash Memory Used to add additional memory to MP3 players
Types of flash memory:
Compact Flash:
64 MB to 1 GB
Multimedia (MMC) and SmartMedia:
128 MB
Secure Digital:
512 MB
Sony Memory Stick:
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11. MP3 Ethical Issues Is it illegal to download MP3 files? MP3.com:
Song files are on a public server
Permission is given by the artist or recording company to place the files on the server
A fee is paid to download a file.
Napster:
A file exchange site
Song files were borrowed from users’ computers (peer-to-peer (P2P) sharing)
Sued for copyright infringement
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12. Personal Digital Assistants (PDAs)
Small devices that store digital information
Known as palm computers or handhelds
PDA hardware includes:
CPU
Operating system
Storage capabilities
Input/output devices
Ports
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13. PDA Input and Output Devices
Input devices
Touch-screen with stylus
Keyboards:
On-screen
Integrated
Folding
Digital cameras
Output devices
LCD displays:
Grayscale
Color
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14. PDA Processors Popular processors: Comparing processors:
Motorola DragonBall
Texas Instruments OMAP
Intel XScale
Comparing processors:
Speed
Performance:
Benchmarking
Power consumption
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15. PDA Operating Systems Palm OS Uses less memory than Pocket PC
Easy to use graphical interface
Features include:
Calendar
To-do list
Contact information
Viewing Videos
Playing MP3 files
Extra 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
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16. PDA Memory and Storage
ROM stores the operating system and the basic programs
RAM stores additional applications and data
Flash memory is used for additional storage
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17. PDA File Transfer and Synchronization
PDA files can be transferred to a desktop using:
Flash card readers
Cradles
Synchronizing updates files on both the PDA and desktop
Wireless transfers:
IrDA
Bluetooth
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18. PDA Internet Connectivity
An Internet connection requires a wireless ISP
Web pages are accessed using Wireless Application Protocol (WAP)
Web clipping enables information from Web pages to be formatted for PDAs
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19. PDA Software and Accessories
Standard software:
To-do list
Contacts manager
Calendar
Additional software:
Microsoft Word and Excel
Games
Tools
References
Blueboard:
PDA display acts as a drawing board
Connects to four other PDAs
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20. Tablet PCs
Portable computers with handwriting recognition and speech recognition
Two monitor modes:
Laptop
Tablet
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21. Tablet PC Hardware Tablet PC hardware includes:
CPU
Operating system
Storage capabilities
Input/output devices
Ports
Digital ink technology:
Pressure sensitive screen
Digital pen
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22. Tablet Software Windows XP Tablet PC is the operating system
Applications programs compatible with Windows XP are available
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23. Laptops Also known as notebooks Computing power of a desktop
Weigh 6 pounds
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24. Laptop Hardware DVD/CD-RW drives Hard drives RAM Hot-swappable bays:
Remove a drive and replace it with another type
Keyboard
Built-in mouse
LCD displays
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25. Laptop Operating Systems
Same operating systems as those found on desktops
Power management:
Shuts down the hard drive
Turns off the monitor
Puts the computer into standby mode
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26. Laptop Ports A full set of ports: Parallel Monitor USB Modem Ethernet
Audio jacks
FireWire
PCI type I/II card slots
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