WiFi was invented in 1991 by 5 men led by Dr. John O'Sullivan to allow electronic devices to communicate over a wireless radio signal. Now WiFi is ubiquitous and provides internet access from smartphones, laptops, and other devices anywhere within range of a WiFi network or hotspot. WiFi networks are commonly available both privately in homes and businesses and publicly in places like airports, hotels, and restaurants to attract customers.

1. GREEN UNIVERSITY OF
BANGLADESH
Department: EEE (Eve)
Prepared By:
Shahida Akter
ID# 143010003
Course Title: Communication Theory
Prepared For:
Md. Khairul Bashar
Lecturer, GUB

3. Definition
WiFi is the a short word for Wireless Fidelity.
WiFi is a wireless networking technology that
allows electronics devices to communicate over a
wireless signal. Basically Wi-Fi is a high
frequency radio signal because the same way
radios can tune into a radio station signal over the
air waves a device can pick up a signal that comes
through the air and connects to the internet..

4. Who Invented WiFi ?
WiFi was invented in 1991 by 5 men.
• Terence Percival
• John Deane
• John O’Sullivan
• Graham Daniels
• Diethelm Ostry
Dr. John O’Sullivan was the head of the group.

5. WiFi Today
Now we have WiFi, it’s sometimes harder to think
what we can’t do, rather than what we can. With
WiFi we have the internet instantly at our
fingertips, as long as we have a smartphone,
mobile device or laptop close to hand.

6. WiFi Used at Various Places
 WiFi provides service in private homes, businesses, as well as in
public spaces at WiFi hotspots set up either free-of-charge or
commercially, often using a captive portal webpage for access.
 Organizations and businesses, such as airports, hotels, and
restaurants, often provide free-use hotspots to attract customers.

7. WiFi in House

8. Applications of WiFi
 Sync Your Music Library, Photo Library, or Other Files
with Your Smartphone USB-Free
 Wirelessly Transfer Photos from Your Digital Camera
 Share Files with Nearby Computers
 Stream Movies to Any TV in the House