5. Electronic mail, commonly called email, is a
method of exchanging digital message from an
author to one or more recipients. Modern email
operate across the internet or other computer
networks. Some early email system required that
the author and recipient both be online at the
same time, in common with instant messaging.
Today’s email system are based on a store-
and-forward model. Email servers accept,
forward, deliver and store messages. Neither the
users nor their computer are required to be
online simultaneously.
6. Email allows individuals and groups to
communicate with one another. Imagine that
you’ve been asked to coordinate work on a
proposal to address a problem in your dorm
or Greek organization. You need to get
information and ideas from people living in
your dorm or house, from members of the
surrounding community, from university
officials, and perhaps other groups.
7. cheap, ones you’re online ,there is no futher
expense.
Easy to reference. Sent and received messages
and attachments can be stored safely, logically
and reliably.
Fast message to send? Done, under a second!
Email is by far the fastest form of written
communications.
8.
9. The global communication network that
allows almost all computers worldwide to
connect and exchange information. Some of
the early impetus for such a network came
from the U.S. government network Arpanet,
starting in the 1960s
10. The history of the Internet begins with the
development of electronic computers in the
1950s. Initial concepts of packet
networking originated in several computer
science laboratories in the United States, United
Kingdom, and France. The US Department of
Defense awarded contracts as early as the 1960s
for packet network systems, including the
development of the ARPANET. The first message
was sent over the ARPANET from computer
science Professor Leonard Klein rock's laboratory
at University of California, Los Angeles (UCLA) to
the second network node at Stanford Research
Institute (SRI).
11. Electronic mail
World wide web
E – commerce
Health Information Access
14. Cellular telephone, sometimes called mobile
telephone, is a type of short-
wave analog or digital telecommunication in
which a subscriber has a wireless connection
from a mobile phone to a relatively nearby
transmitter. The transmitter's span of
coverage is called a cell. As the cellular
telephone user moves from one cell or area of
coverage to another, the telephone is
effectively passed on to the local cell
transmitter.
15. Motorola was the first company to produce a
handheld mobile phone. On April 3, 1973,
Martin Cooper, a Motorola researcher and
executive, made the first mobile
telephone call from handheld subscriber
equipment, placing a call to Dr. Joel S. Engel
of Bell Labs his rival.
18. Video conferencing, or VC for short, is
defined as conducting meetings in two or
more locations by audio and video
transmission. Specifically, VC uses special
equipment, such as webcams, high-speed
Internet connectivity and personal computers.
With VC, those who participate in the meeting
can see, hear and speak to one another,
regardless of their geographical location, in
real time.
19. The first concepts of video conferencing were
developed in the 1870s, as part of an extension
of audio devices. The first actual developments
of the video telephone began in the late 1920s
with the AT&T company Bell Labs and John
Logie Baird. AT&T experimented with video
phones in 1927.
Early video conferencing experiments took place
in the late 1930s in Germany. This early video
technology over phone lines included image
phones that would send still photos. AT&T began
using video conferencing for its Picture phone
service in the early 1970s.
20. Reduced Travel Costs
No time constraint
Increased productivity
Easy communication