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    Robots and the Whole Technology Story
    Robots and the Whole Technology Story
    Robots and the Whole Technology Story
    Ebook165 pages1 hour

    Robots and the Whole Technology Story

    By Glenn Murphy

    ()

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    About this ebook

    What's inside a laptop? How can you stuff 1,000 CDs into an MP3 player? Who built the Internet? How smart is the world's smartest robot? How do smartphones and TV remote controls work?

    The answers to these and other brilliant questions about technology can be found in this funny and fascinating book in the Science Sorted series by Glenn Murphy, bestselling author of Why is Snot Green?. Packed to capacity with megabytes of marvellous information. Robots and the Whole Technology Story explores everything from the first simple engines to the latest gadgets, computers and networks.

    Discover more funny science with Disgusting Science: Bodies: The Whole Blood-Pumping Story.

    LanguageEnglish
    PublisherPan Macmillan
    Release dateFeb 26, 2015
    ISBN9781447284888
    Robots and the Whole Technology Story
    Author

    Glenn Murphy

    Glenn Murphy wrote his first book, Why is Snot Green?, while working at the Science Museum, London. Since then he has written around twenty popular-science titles aimed at kids and teens, including the bestselling How Loud Can You Burp? and Space: The Whole Whizz-Bang Story. His books are read by brainy children, parents and teachers worldwide, and have been translated into Dutch, German, Spanish, Turkish, Finnish, Chinese, Japanese, Korean and Indonesian. Which is kind of awesome. In 2007 he moved to the United States and began writing full-time, which explains why he now says things like 'kind of awesome'. These days he lives in sunny, leafy North Carolina with his wife Heather, his son Sean, and two unfeasibly large felines.

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      Book preview

      Robots and the Whole Technology Story - Glenn Murphy

      What’s the big deal? The big deal is that you live in an incredible, super-charged, super-connected digital world that your grandparents could never have dreamed of. But do you know how it all works?

      Course I do. You just switch on the computer, click the app or browser thingy, and . . .

      Okay, so maybe you know how to use computers, but do you know how to fix one or build one? If someone asked you to, could you design a robot, a smartphone or a 3DTV?

      Well, if you put it that way . . . err . . . no. I s’pose not.

      Here are some even simpler ones for you: what is a robot? And what is a computer?

      Easy! A robot is like a big, metal . . . err . . . person, and a computer’s like an electronic notepad with . . . well . . . you type on it, and there’s a screen and windows and apps and stuff, and . . . (sigh). Maybe it’s not that easy after all.

      Wouldn’t you like to Know the answers to those questions?

      I bought this book, didn’t I?

      Good point.

      Go on, then.

      Right – first up: robots. In short, a robot is a machine that does things for humans. Often boring, difficult or dangerous work that humans could do, but really rather wouldn’t. Some robots look like humans, or mimic human movements. But many don’t. in fact, most robots look nothing like humans, and move more like snakes, insects or other animals.

      Really? Robot snake? and insects?

      Yep – more about those later. For now, it’s enough now this: right now, there are millions of robots in the world, doing millions of though, tricky of jobs – on land, on sea, underground and even underwater. And to build a wording robot . . . well . . . motors, batteries and body parts are not enough. You also need to give it some sort of electronic brain or controller. That’s where computers come in.

      Okay, then – so what’s a computer, and how do you build one of those?

      A computer is any device that helps humans to deal with (or make sense of) information. They get their name from the word compute, which means to add up. This is because the earliest computers were simple counting tools, used to do sums that were too tricky for humans to do easily in their heads. Over time, these developed into modern computers, which are electronic machines that not only help us mate sense of numbers, but also of patterns, pictures, words, chess moves and much, much more.

      Counting machines

      The abacus

      This was the earliest ‘computer’ (or computing device) and dates back to around 2500 BC. It was used by the mathematicians of ancient Babylonia (who lived in what is now known as Iraq). It was invented to help calculate trades between farmers, merchants and customers. Later, Chinese mathematicians and craftsmen made handy, portable abacuses using beads threaded on to wire.

      The mechanical calculator

      Invented by French mathematician Blaise Pascal, in 1642, it cranked out eight-digit additions using hand-turned cogs, gears and wheels. But, amazing as it was, Pascal’s machine couldn’t subtract, multiply or divide – only add.

      The ‘difference engine’

      In 1849, English inventor Charles Babbage designed his enormously complex ‘difference engine’. Babbage never lived to see his designs become reality, but the Science Museum in London built the machine according to his original plans (made up of an astonishing 25,000 individual parts). It could perform complex multiplication sums up to thirty decimal places and had many of the basic elements of modern computers, including a memory, a processor and switchable functions or programs.

      Size matters

      The valves and switches that went into the first electronic computers were much bigger than the microscopic circuits we use today. This made the computers themselves pretty chunky as a result. Check out these bad boys. In their time, these computers were about the smallest and best you could get. Good thing they’ve come on a bit . . .

      Basically, computers take in information (or input), wort with it (or process it) and then churn it out again in a more useful form, as output. In the very simplest computers, that’s pretty much the end of the story. In more complex computers, the output becomes another input, and the information goes through the input-output cycle thousands and thousands of times before the final output pops out. But the idea is pretty much the same. Computers process inputs into useful outputs. That’s it.

      Now to build a computer, you obviously need things to input with (like a keyboard or a touchscreen), things to output with (like a screen or printer) and things to store and

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