It does at points get pretty deep into the weeds but I really appreciated the author's efforts to provide such an exhaustive dive into how computers work (and I regained much of my awe at these machines we take so for granted nowadays). I saw immediately that the cable wire attached to the battery was missing a few inches of electrical tape, leaving the copper exposed. So I wanted to encourage people like me, who have no experience whatsoever in CS, to give this book a try! What a ride! This is a good book. Such a fun and interesting book. Reviewed in the United States on November 10, 2017. Chapter 17 ("Automation"), however, was where I began to feel a bit in over my head. I write on a daily basis actually makes its way through the magical land that is a computer and returns pleasantries to a human being behind the screen, I sat down with this "Code" book. Petzold then takes a detour to introduce “base” systems, working down from decimal (ten distinct numbers from 0-9 before you have to add another digit to represent “10”) through octal (you only have 8 digits) all the way down to binary where you only have 0s and 1s. This is a good book. It provides a general overview of how computers function. For a noob like me this was a big deal. Petzold first introduces the basics of boolean logic and then shows how you can combine that with electricity (starting with simple circuits using a light bulb and switches) to create logic gates. I liked it because it's more of a novel than an actual text, it gives a good background to many of the topics I'm teaching, and I can go in depth into other topics and ideas that are related to the concepts described in the book. Similarly I knew a fair amount about how various electrical gates work but not how by pairing multiple gates together you eventually get to RAM, a CPU, etc. Or if you're just interested in tech. I enjoyed his intro into Morse code and Brail as it felt he was conditioning readers to grasp idea how computers received and process information. 1990s computers) and the final chapter on the graphical revolution goes through way too much, way too fast to be of any use. Petzold then runs us through how to build an automated adding machine, building up the basic instructions of a microprocessor one at a time. Charles Petzold has been writing about programming for Windows-based operating systems for 24 years. The last chapter of the book felt a bit rushed and ended abruptly, but maybe that’s just my wanting the book to go on longer/end at present day. With a desire to learn how the high level code (HTML, CSS, JavaScript, etc.) Great intro into the world of computing. Petzold spends a long time laying down the basic blocks of electrical engineering before progressing to how bits flow through a circuit board and control things. Petzold goes back to the very basics to explain how to build a computer (of sorts) from the ground up. This book basicaly tries to take you from the very basics of how to encode information, such as how binary is used to represent complex information, to understanding how a computer uses information like this to perform intricate operations. Recommended for anyone who would really like to understand the basic concepts behind computer technology, but doesn't want to go back to graduate school. however after some reading I've got to love it very quickly, Reviewed in the United States on June 17, 2016. This book is for us. By saying 'engineering', I mean it. This book has really taught me a lot, despite the fact that many of the later chapters lost me somewhat; it felt like it became much more complicated and hard to follow after the earlier chapters, which were great, slowly paced and well explained. It was my brother who’ve recommended the Code (the book) to me. At Flatiron School you can change anything, starting a new career in code, data science, or cybersecurity. Let us know what’s wrong with this preview of, Published Starting from workings of an electrical circuit and building up to various logical elements with gradually increasing complexity. Understanding what's going on at the core of your code can never hurt, and this is the most interesting way you could ever learn about it. I really enjoyed most of this book. Chapter 17 ("Automation"), however, was where I began to feel a bit in over my head. Welcome back. I only read this book because it was quoted as a must read by Joel Spolsky on a stackexchange answer about how to go about learning programming (and finding out if you want/should be a programmer). Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. You can still see all customer reviews for the product. And that’s something we’ll see a lot more of as the book progresses since most computers also use a binary code (with 1s and 0s) to represent information and instructions. Best bottom-up education ever. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. The historical information is extremely informative. He shows how AND, OR and NOT logic gates work and how they can be combined. There are no discussion topics on this book yet. From circuits with a battery, switch and bulb to logic gates to a thorough description of the Intel 8080. In CODE, they show us the ingenious ways we manipulate language and invent new means of communicating with each other. The route between those two points is the interesting part, and there was some parts that I foudn really illuminating and important. A book about computers “without pictures of trains carrying a cargo of zeroes and ones” — the absolute no-nonsense book on the internals of the computer. If you’re willing to take the time to work through the 380 pages, you’ll never quite think about a computer in the same way again! If you work with computers and didn't read this book, you are lame. To handle that, Petzold introduces the idea of a relay — something that takes a small, weak current and uses it to flip a switch in another circuit which can carry a bigger current. Wonderful for non-technical backgrounds too! This book has really taught me a lot, despite the fact that many of the later chapters lost me somewhat; it felt like it became much more complicated and hard to follow after the earlier chapters, which were great, slowly paced and well explained.

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