hi its ppt for mobile computing m saiteja emil.me through sai.tejabaddam@gmail.com

1. PRESENTED
BY
Srilaxmi &&
Saiteja
CSE III YEAR

3. Introduction to mobile computing
History of mobile computing
Existence of celluar network architecture
Data communications
Mobile aspects and devices
Portable computing devices
Security involved in mobile computing
Application of mobile computing
Technical and other limitations
Future

4. A technology that allows transmission of data ,via computer
without having to be connected to fixed physical link
An extension of this mobile voice communication
technology is the ability to send and receive data across these
celluarnetworks.this is the principle called of mobile
computing
Mobile data communication has become a very important
and rapidly evolving technology as it allows users to transmit
as it allows users to transmit data from fixed location

5. In 1890 Marconi invented the wireless telegraph by
encoding wire less telegraph by encoding the alphanumeric
characteristics in analog signals
In 1960 military had started using different types of wireless
For many communications devices for many years .it has
created great advances in space programs
Later in 1990’s satellite systems emerged and were
commercialized. With arrival of communication system,the
quality of service reliability increased enormously
Later many technologies such as wi-fi,bluetooth,2G,3G
emerged to make a mobile

6. Mobile telephone took off with the introduction of
celluar technology which allowed the efficient
utilization
of frequencies enabling the connection of a large
number of user
A celluar network consits of mobile units linked
together to switching equipment,which interconnect
the diiferent parts of network and allows acess to find
the public switched telephone
network (PTSN)
The MSC(mobile switching centre )is the heart of
a celluar radio system it is responsible for routing ,or
switching ,calls from the orginator to the

7. The frequencies used vary according to the celluar network
.for GSM,810-915mhz range is used for transmission and 935-
960 for reception.The DCS technology uses technology in the
1800mhz range while pcs in the 1900 range
In during calls the MS moves to an adjacent cell then of
frequency will necessarily occur –since adjacent cells never use
the same channels .This procedure is called hand over and is the
key to mobile computing

8. Data communication is the exchange of data using existing
Communication networks .The term data covers a wide range
Of applications including .file transfer (FT),interconnection
between
Wide area network (WAN),facsimile ,electronic mail acess to the
internet and the word wide web(WWW)
Circuit switching implies that data from any one user to another
has t0 follow a specified path

9. Packet switching is an attempt to make better utilisation of the
existing network by splitting the message to be sent into packet
The most widely used are VIRTUAL CIRCUIT SWITCHING
And data gram

10. A portable computer is a general
purpose computer that can be easily
moved from place to place,but
cannot while in transmit i.e it
requries AC power source
portable computers are also called
as “transportable or luggable”pc
A Table computer that lacks a
keyboard is shaped like slate or a
paper or a notebook shaped

11. A personal digital assistant is a
small,usually pocket sized
Computer with limited
functionality .it intended to
supplement and to synchronize
with a desktop computer

12. ASPECTS
Mobile communications
Mobile hard ware
Mobile software
DEVICES
Personal and digital assistant/
enterprise digital assistant
Smartphone
Tablet computer
Ultra –mobile PC

13. An oppose to the benfits of being able to acess
information from any location through wireless
transmission ,there it faults with the need for security
protection
In a wireless mobile communication enviornment ,the
messages transmitted over the wireless medium are
more susceptible when compared to wired network
In order to provide security from evaes dropping pr
false identites,system use encryption which provides
confidentially of the messages sent over wireless
channel authenticate

14. For estate agents
In courts
In companies
Credit card verification
Electronic mail paging
Taxi trick dispatch

15. In sufficient band width
=>2G,3G,4G
Security standards
=> encryption/vpn
Transmission interference
=>multiple antennae
Human interface with device
=> tablet pc

16. The rapid technological advancement in artificial
intelligence ,integrated circuitry and increases in computer
processor speeds
Due to their artificial intelligence they can change the
individual personal schedule according to their messages
The working life style will change majority of people
working from home rather than commuting.this benfits
envoirnment
The scary concept of a world full of inanimate zombies
sitting, locked to their mobiles stations every sphere lives via
computer screen becomes more real as technology in the field
of data communication

17. The future of mobile computing is very promising
indeed, although technology may go too far ,causing
detriment to society

18. Mobile computing is an important evolving
technology .it enables mobile personnel to
effectively communicate and interact with the
fixed organizational information system while
remaining unconstrained by physical location
it is a versatile and potential strategic
technology that improves information quality
And accessibility increases operational
efficiency and enhances management
effectiveness

19. GH Forman J zahorajan-computer,1994-
do,ieeecomputersociety.org
David P.Helmbold “ dynamic disk down
technique for mobile
computing”,cirtesser.ist.psu.edu.1996
Landay ,J.A kaufmann ,T.R, “user
interfaces issues in mobile
computing”,workstation operating system
,1993
http://www.blm.gov/wo/st/en/prog/more/be
a/glossary.html#m
http://mobileman.projects.supsi.ch/glossary.
html

20. THANK U
?