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Learn some history of computers and the Internet, including historical persons, products, and artifacts.
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Let's talk a little history.
0:00
It's hard to know where you're going
if you don't know where you've been.
0:02
Charles Babbage is widely considered
the father of the computer.
0:07
Babbage is credited with inventing the
first mechanical computers in the 1800s.
0:11
Mathematician Ada Lovelace is credited
with publishing the first computer program
0:17
in the 1840s, designed for
use on one of Babbage's early machines.
0:22
But even after Ada Lovelace wrote
the first program, it would still be over
0:27
a century before the first large scale
programmable computer was introduced.
0:32
Built in 1945, the ENIAC was commissioned
0:38
at the University of
Pennsylvania in Philadelphia.
0:41
The ENIAC was 9 feet tall,
covered 1,800 square feet,
0:45
weighed nearly 30 tons and cost $500,000.
0:51
Adjusted for
inflation that's over $7 million in 2021.
0:56
It sported an impressive clock
speed of 100,000 cycles per second.
1:02
In other words,
1:07
it could add two large numbers
together 5,000 times in one second.
1:08
The first personal computers
were introduced in 1977 by three
1:15
different companies known as the Trinity.
1:20
One of those computers, the Apple II,
help launch the Apple computer company,
1:23
known today for the Mac book line of
laptop computers and mobile devices,
1:29
such as the iPhone and the iPad.
1:33
In 1982, the Commodore 64 was born.
1:37
Selling 17 million units,
1:40
the Commodore 64 still holds the title as
the best selling computer of all time.
1:43
Fast forward to now, the iPhone X was
released in 2017 compared to the 30-ton,
1:50
basement size ENIAC, the iPhone X
weighs less than half a pound and
1:57
it fits comfortably in your hand.
2:02
It has a clock speed of 2.1
billion cycles per second and
2:05
cost about $1,000 at
the time of this launch.
2:08
To put that in perspective,
the iPhone is over 20,000 times
2:13
faster than the ENIAC and
a tiny fraction of its size and costs.
2:17
In fact, the mobile devices of
today can do things that even
2:22
the most powerful computers of 20
years ago couldn't accomplish.
2:26
For instance,
I have access to the Internet and
2:30
the World Wide Web right
in the palm of my hand.
2:33
Let's talk about them.
2:37
The Internet is a global system of
interconnected computer networks to
2:40
communicate between devices and
other networks.
2:44
In other words, the Internet is a network
of networks, that consists of public,
2:48
private, academic, business,
and government networks.
2:54
It is completely reshaped the way
we communicate, shop, learn and
2:59
conduct business.
3:04
The World Wide Web was invented
by Tim Berners-Lee in 1989.
3:06
And the public was first granted
access to this new network in 1991.
3:11
The web allows us to access information
on the Internet using a web browser.
3:17
I can visit a website like
teamtreehouse.com and
3:22
click on hyperlinks to
access other web pages.
3:25
In the next video, we talked about
different computer components,
3:28
hardware, software, storage.
3:32
Oh My! Stay tuned.
3:35
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