today about 4.2 billion people have
access to a world of information never
before seen such an extraordinary level
of connectedness has revolutionized
everything from science and technology
to commerce and romance and virtually
every aspect of our lives of all the
technological innovations in history few
have made as strong of an impact as the
internet comprised by a global network
of computers the internet allows for the
transmission of information and
connectivity at an unprecedented speed
and scale some of the first computer
networks began in the 1950s and 60s but
unlike today’s global network
these early networks were centralized
within certain businesses and agencies
it wasn’t until 1969 when centralized
computer networks became connected
funded by the US Department of Defense
and developed by universities this hosts
a host network connection called ARPANET
a direct ancestor of the internet was
the first of its kind the network grew
and by the 1980s incorporated networks
at research institutions and other US
federal agencies such as the National
Science Foundation or NSF the NSF
connected these disparate networks into
one large one NSFNET which shifted over
from being a federally run network to a
commercial enterprise for Internet
[Music]
by the late 1990s this shift along with
the rise of personal computers the world
wide web and web browsers allowed the
general public to access the Internet
for the very first time today computers
smart phones televisions video game
consoles and other devices all tap into
the network and transmit and receive
data almost instantly for example by
clicking send and messaging apps text
audio and video are converted into
pieces of electronic data called packets
these packets are then tagged with a
port number and IP address
much like the mailing address on an
envelope the port number and IP address
direct the packets to a given
destination on the internet from there
the packets may travel over Wi-Fi
cellular data or an Ethernet or phone
line through a series of routers modems
and servers then through fibre optic
cables or satellites and through a
similar process in Reverse to reach the
packets destination once the packets
arrive their data is reassembled into
the text audio or video that was
originally sent since the days of the
earliest computer networks the internet
has undergone a tremendous
transformation while also transforming
the world that created it from a closed
off network to one that covers the globe
the Internet has provided access to
information to every continent
connecting people and ideas like never before
access to a world of information never
before seen such an extraordinary level
of connectedness has revolutionized
everything from science and technology
to commerce and romance and virtually
every aspect of our lives of all the
technological innovations in history few
have made as strong of an impact as the
internet comprised by a global network
of computers the internet allows for the
transmission of information and
connectivity at an unprecedented speed
and scale some of the first computer
networks began in the 1950s and 60s but
unlike today’s global network
these early networks were centralized
within certain businesses and agencies
it wasn’t until 1969 when centralized
computer networks became connected
funded by the US Department of Defense
and developed by universities this hosts
a host network connection called ARPANET
a direct ancestor of the internet was
the first of its kind the network grew
and by the 1980s incorporated networks
at research institutions and other US
federal agencies such as the National
Science Foundation or NSF the NSF
connected these disparate networks into
one large one NSFNET which shifted over
from being a federally run network to a
commercial enterprise for Internet
[Music]
by the late 1990s this shift along with
the rise of personal computers the world
wide web and web browsers allowed the
general public to access the Internet
for the very first time today computers
smart phones televisions video game
consoles and other devices all tap into
the network and transmit and receive
data almost instantly for example by
clicking send and messaging apps text
audio and video are converted into
pieces of electronic data called packets
these packets are then tagged with a
port number and IP address
much like the mailing address on an
envelope the port number and IP address
direct the packets to a given
destination on the internet from there
the packets may travel over Wi-Fi
cellular data or an Ethernet or phone
line through a series of routers modems
and servers then through fibre optic
cables or satellites and through a
similar process in Reverse to reach the
packets destination once the packets
arrive their data is reassembled into
the text audio or video that was
originally sent since the days of the
earliest computer networks the internet
has undergone a tremendous
transformation while also transforming
the world that created it from a closed
off network to one that covers the globe
the Internet has provided access to
information to every continent
connecting people and ideas like never before
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