Wi-Fi technology has evolved from early experiments with radio waves in the 19th century to today's widely used wireless networks. Key developments included Maxwell proving the existence of radio waves in 1864, Hertz transmitting the first radio waves in 1887, and Marconi discovering short wave radio in 1920. The first wireless local area network was created at the University of Hawaii in 1971. Today, Wi-Fi networks using radio frequencies allow devices to connect to the internet without cables by communicating with wireless access points and routers. Common applications of Wi-Fi include internet access at home and work, as well as public hotspots at locations like airports and cafes.

1. YOGESH PARMAR
BCA ( MSC –IT RUNNING )

2.  1864: James Clerk Maxwell proved the existence
of electromagnetic waves
 1887 Heinrich Hertz sent and received wireless
waves, using a spark transmitter
 1920: Marconi discovers short wave radio, with
wavelengths between 10 and 100 meters.
 The first wireless LAN was created in at the
University of Hawaii in 1971.

3. What is Wi-Fi?
 Wi-Fi is stands for wireless fidelity.
 Requirement of Wi-Fi is mostly in Network Adapters, USB
Adapters, internal and external antennas, all kinds of
Access points.
 A Wireless Adapter translates data into a radio signal and
transmits it using an antenna.
 A router receives the signal and decodes it. The router
sends the information to the Internet using a physical
wired Ethernet connection.

4.  Theterm Wi-Fi, first used commercially in
August 1999, was coined by a brand-
consulting firm called interbrand
Corporation that the Alliance had hired to
determine a name that was "a little catchier
than 'IEEE 802.11b Direct Sequence"

5. SPEED OF WI-FI
 wi-fi network use radio technology to
transmit and receive the data at a high
speed.
 (1) 802.11
 (2) 802.11a
 (3) 802.11b
 (4) 802.11g
 (5) 802.11n

6. A and B is 10mbps and G is 54mbps
 And Upcoming N is 300mbps to get
speed on your internet connection.

7. HOW TO WIFI NETWORK WORK?
 The wi-fi of basic concept is same as walkie-talkies.
 wi-fi hotspot is created by installing and access point to and
internet connection
 when wi-fi enabled devices encounters a hotspots the
devices can than connect to that net-work wirelelissly
 a single access point can support up to 30-users and can
function within a range of 100-150 feet indoors and up to
300 feet outdoor.
 many access point can be connected to each other via
Ethernet cable to create a single large network.

8. Wi-Fi OBJECT
2.A roof-mounted Wi-Fi
1. Wireless PCI Network Card
antenna
3.Wireless Network Access Point 4.Laptop Wi-Fi cards

9. 1.Wireless PCI Network Card
 Network card that plugs into a PCI slot on
your computer's motherboard. Also available
as PCMCIA cards for use in laptops
 PDA or laptop to connect to your PC to share
files or an Internet connection

10. 2.A roof-mounted Wi-Fi antenna
 A Wi-Fi enabled device such as a personal computer, video
game console, Smartphone or digital audio player can
connect to the Intetnet when within range of a wireless
network connected to the Internet. The coverage of one or
more (interconnected) access points — called hotspots can
comprise an area as small as a few rooms or as large as
many square miles. Coverage in the larger area may depend
on a group of access points with overlapping coverage. Wi-
Fi technology has been used in wireless mesh networks, for
example, in London, UK.
 In addition to private use in homes and offices, Wi-Fi can
provide public access at Wi-Fi hotspots provided either
free-of-charge or to subscribers to various commercial
services. Organizations and businesses - such as those
running airports, hotels and restaurants - often provide free-
use hotspots to attract or assist clients.

11. 3.Wireless Network Access Point
 Allow machines to connect onto a network
to share resources such as a Broadband
Internet connection and a printer. If looking
for an access point.
 access point-: the ap is the wireless LAN
transceiver
or" base connection" that connect one or
more wireless
devices simultaneously to the internate.

12. 4.Laptop Wi-Fi cards
 These are PCMCIA cards that slide into a
special slot on many laptops, adding wi-fi
connectivity to laptops.
 wi-fi card-:they accept the wireless signal
and relay information they can be internal
and external.

13. WHERE IS USE OF Wi-Fi?
 Offices
 Homes
 Industries
 Hospitals
 Hotels/ restaurants
 Banks
 IT companies

14. ADVANTAGES & DISADVANTAGES FOR Wi-Fi
 The some advantages of Wi-Fi is
mobility,ease of installation,costly,speed,
secure,flexibility.
 The disadvantages of Wi-Fi is limited
range and high power consumption.

15. EXAMPLE OF Wi-Fi

16. ADVANCE VERSION OF Wi-Fi
 Wi-MAX is the Advance version of Wi-Fi.
 Wi-MAX is the providing the more security and
range compare to Wi-Fi.
 Wi-MAX stands for the Worldwide
Interoperability Microwave Access.

17. BLUETOOTH
 Bluetooth wireless technology is a
short-range radio technology.
 Bluetooth wireless technology makes it
possible to transmit signals over short
distances between telephones,
computers and other devices and
thereby simplify communication and
synchronization between devices.
 The Bluetooth wireless technology
comprises hardware, software and
interoperability requirements.
 Transmits at up to 1 Mbps over a
distance of 33 feet and is not impeded
by physical barriers

18. WI-FI V/S BLUETOOTH
 Bluetooth is the shortes range of
wireless communication up to 10Fit.
 Where Wi-Fi is the largest range to
wireless communicate .
 Bluetooth is get data to transfer speed is
1.0mbps where Wi-Fi get data transfer
speed up to 802.11a to 802.11n.
 Now a days Wi-Fi is the best use for
people better than Bluetooth.

19. THANK YOU