Charles Petzold


The Hidden Language of Computer Hardware and Software. 2nd edition. facsimiles, portraits. Sprache: Englisch.
kartoniert, 469 Seiten
ISBN 0137909101
EAN 9780137909100
Veröffentlicht September 2022
Verlag/Hersteller Microsoft Press

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The classic guide to how computers work, updated with new chapters and interactive graphics
"For me, Code was a revelation. It was the first book about programming that spoke to me. It started with a story, and it built up, layer by layer, analogy by analogy, until I understood not just the Code, but the System. Code is a book that is as much about Systems Thinking and abstractions as it is about code and programming. Code teaches us how many unseen layers there are between the computer systems that we as users look at every day and the magical silicon rocks that we infused with lightning and taught to think."
- Scott Hanselman, Partner Program Director, Microsoft, and host of Hanselminutes
Computers are everywhere, most obviously in our laptops and smartphones, but also our cars, televisions, microwave ovens, alarm clocks, robot vacuum cleaners, and other smart appliances. Have you ever wondered what goes on inside these devices to make our lives easier but occasionally more infuriating?
For more than 20 years, readers have delighted in Charles Petzold's illuminating story of the secret inner life of computers, and now he has revised it for this new age of computing. Cleverly illustrated and easy to understand, this is the book that cracks the mystery. You'll discover what flashlights, black cats, seesaws, and the ride of Paul Revere can teach you about computing, and how human ingenuity and our compulsion to communicate have shaped every electronic device we use.
This new expanded edition explores more deeply the bit-by-bit and gate-by-gate construction of the heart of every smart device, the central processing unit that combines the simplest of basic operations to perform the most complex of feats. Petzolds companion website,, uses animated graphics of key circuits in the book to make computers even easier to comprehend.
In addition to substantially revised and updated content, new chapters include:Chapter 18: Lets Build a Clock!Chapter 21: The Arithmetic Logic UnitChapter 22: Registers and BussesChapter 23: CPU Control SignalsChapter 24: Jumps, Loops, and CallsChapter 28: The World Brain
From the simple ticking of clocks to the worldwide hum of the internet, Code reveals the essence of the digital revolution.


Charles Petzold is also the author of The Annotated Turing: A Guided Tour through Alan Turings Historic Paper on Computability and the Turing Machine (Wiley, 2008). He wrote a bunch of other books too, but theyre mostly about programming applications for Microsoft Windows, and theyre all obsolete now. He lives in New York City with his wife, historian and novelist Deirdre Sinnott, and two cats named Honey and Heidi. His website is

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