A wireless local area network (WLAN) uses radio waves to connect devices in a limited area without cables. It allows users mobility within the coverage area while maintaining internet access. Wireless LANs became popular for homes and commercial spaces due to their ease of installation compared to wired networks. The first wireless computer network was developed in 1971 by Norman Abramson and used ham radios to connect computers across islands without phone lines.
2. A wireless local area network (WLAN) is
a computer network that links two or more
devices using a wireless distribution method
(often spread-spectrum or OFDM radio)
Within a limited area such as a home, school,
computer laboratory, or office building.
3. This gives users the ability to move around
within a local coverage area and still be
connected to the network, and can provide a
connection to the wider Internet.
4. Wireless LANs have become popular in the
home due to ease of installation, and in
commercial complexes offering wireless
access to their customers
5. Norman Abramson, a professor at
the University of Hawaii, developed the
world’s first wireless computer
communication network (operational in 1971)
Using low-cost ham-like radios. The system
included seven computers deployed over four
islands to communicate with the central
computer on the Oahu Island without using
phone line.
6. WLAN hardware initially cost so much that it
was only used as an alternative to cabled LAN
in places where cabling was difficult or
impossible.
7. Electromagnetic airwaves are used to
communicate from point one to point two
without having to rely on on any physical
connection
Data being received is modulated on the
radio carrier so it can be extracted
accurately on the receiving end
