All language subtitles for 1_History of the Internet

You've learned what the Internet

is and a little bit
about how it works.

Now, we're going to take a step

back and learn why
it was created.

But before we do that,

I'd like to introduce myself.

My name is Gian Picasa and I'm

a Program Manager in
Android Security.

I help protect Android's

two billion plus
users by managing

new security
features for each of

Android's deserts or
versions of Android.

I've always loved
technology and I worked in

IT since I was 16 and
throughout university,

I would fill my past time
reading about new tech

and building servers from

old computer parts
in my basement.

My earliest memory of working on

tech is waiting for my
parents to go to sleep

so I could quietly dial up

the Internet while the
phone was free and

just browse websites all night

long and read about
random tech things.

My first jobs were as

a one-person IT crew at three
non-profit organizations.

It was both stressful and really

exciting to be responsible
for everything,

from configuring and
administrating backup servers to

just showing new
employees how to

access email and use
their computers.

I'm really excited
to be here with you.

I was never a really
great test taker

and my grades reflected that.

But I knew with hard
work and perseverance,

I could build a great career
in IT and so can you.

Let's get started and dig in
a bit more on the Internet.

The Internet has become an
essential part of our lives.

Our bank accounts,
entertainment,

news and education are
all on the Internet.

It's important to
learn why that is,

since some of the
original designs of

the Internet have reached
their limitations.

As an IT support specialist,

you should understand
what the future

of the Internet holds and why.

Let's go back in time to the
1950s where it all started.

Remember, back then computers
were huge and bulky.

If you're a programmer,

you needed to directly
interact with

these massive
computers that would

get real old real fast,

especially if you had
several people who wanted

to use the only computing
resource available.

The late 1960s,
the US government

spun up a project called DARPA.

It went on to create
the earliest version of

the Internet that we've seen
today with the ARPANET.

Eventually, computer
programmers were able to share

a single computing resource by

being able to remotely
access the computer.

But there were still
a big problem.

Networks couldn't
talk to each other.

It wasn't until the
1970s that we had

a critical breakthrough in

computer networking
that fix this problem.

It was thanks to
computer scientists,

Vinton Cerf and Bob Kahn who
created the method we call

the Transmission
Control Protocol and

the Internet
Protocol, or TCP/IP.

First, only a handful of
computers in universities,

governments and businesses
adopt TCP/IP, then hundreds.

Then in the span of 50 years,
billions of computers.

TCP/IP is the protocol that
we use on the Internet today.

Finally, people around

the world could send
data to one another.

But there were still a problem.

The information they
sent was just text,

it wasn't centralized
and it was pretty bland.

Then in the 1990s,

a computer scientist
by the name of

Tim Berners-Lee invented
the worldwide web.

It utilized different protocols

for displaying information in

webpages and became
the predominant way

of communication and
accessing the Internet.

Anyone who had an
Internet connection

at that time was able

to access the information
source of the World Wide Web.

It's been 30 years since

the creation of the
World Wide Web.

We've gone from sending
simple email messages in

the viewing basic
web pages to having

video chats and
instant news updates,

order food, buy books,

and even cars in a
matter of seconds,

taking the online
course like this

wasn't even possible
until recently.

The creation of the
Internet that we

know today was the
culmination of

knowledge and engineering from

many brilliant scientists
and organizations.