1. MOBILE COMPUTING
Jitendra Patel
ROLL NO :- 38
TY MSC(CA & IT)

2. What is mobile computing?
According to a dictionary: Mobile: Able to move freely Computing: The activity of using a computer

3. Mobile Computing
Desktop Laptop
Mobile Computing?

4. Mobile Computing Able to communicate (or to access information)
anytime, and anywhere
Wireless Access
Network
Portable Devices
Data Server, Other People, etc.

5. Portable Devices Laptop fully functional standard applications
PDA
simple graphical displays
character recognition
simplified WWW
Laptop
fully functional
standard applications
Mobile phones
voice, data
simple text displays
Palmtop
tiny keyboard
simple versions of standard applications

6. Advantages and Limitations
Limited battery life
Screen display
Slow mobile Internet connection
Wireless Internet coverage may not exist
More costly
Less rugged
Communicate wherever you are
Access and change electronic information
Access Internet through wireless network

7. Paging Devices Inexpensive Lightweight Different kinds Radio devices
Numeric
Voice
Alphanumeric
Two-way pagers (transmitter)
Radio devices
Translate radio waves into digital signals

8. Cellular Phone Features
Auto-redial
Call timers
Voice mail
Internet access
Microbrowser
Wireless Markup Language
Text messaging
SMS (Short Message Service)
MMS (Multimedia Message Service)

9. Cell Phones Have the Same Components as a Computer!
Processor (CPU)
Internal memory up to 750 KB
Store contact data, images, ring tones
Operating system
Symbian OS
Input, Output devices
Microphone, keypad, camera

10. MP3 Players for Storing Music
Digital files (bits)
Varying storage space
Memory chips (64 to 256 MB)
Built-in hard drive (up to 40 GB)
Removable flash memory card (64 MB to 1GB)
Store up to 5,000 songs
Additional options:
Images
Video

11. MP3 Player Ripping Transfer Files to MP3 Player
Converting a song from a CD into a digital MP3 file
Sampling Rate
Transfer Files to MP3 Player
Software
USB 1.0 port
FireWire port
USB 2.0 port

12. Personal Digital Assistants
(PDA)
Personal Digital Assistants
Small, smaller, smallest
View, store and transmit data from a handheld device
New applications
Mix of personal and business data
Less personal
Access and store corporate data

13. PDAs Have the Same Components as a Computer!
Palm computers or Handhelds
Processor (CPU)
Operating system
Palm OS
Pocket PC (Windows CE)
Storage
Input devices
Output devices
Ports

14. PDA Hardware Stylus for input Keyboard Processor Internal memory
Integrated
Folding
Processor
Speeds vary
Internal memory
Flash memory
Eg. Memory Stick, CompactFlash card
LCD screens
Grayscale
Color
Digital cameras

15. Tablet PCs Portable and lightweight Advanced handwriting recognition
Pressure sensitive screen
Digital pen, digital ink
Draw images and enter text
Speech recognition
Speech can be converted into text or commands
Removable keyboard

16. How about wireless networks?
Wireless users access the network by means of a shared channel
Shared Channel
Access capacity is inherently limited.
Base Station

17. Laptop Computers Also called “notebooks” Powerful portable solution
DVD/CD-RW
Larger displays/hard drives
RAM up to 1 GB
Slower processors than desktops

18. Laptop or Desktop? More costly Less expandable
Exposed to more hazards, possibly theft
Great location flexibility
Can add devices using:
FireWire
USB ports
PC cards

19. Number of Subscribers in Hong Kong
Will wireless Internet take off?
Fixed Telephone
Mobile Phone
Broadband Internet

20. ~:References:~

21. Thanks