History of Computers and the Internet

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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