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Cover of Code by Charles Petzold

Code

The Hidden Language of Computer Hardware and Software

by Charles Petzold

5/5
Microsoft Press 480 pages August 2, 2022

Charles Petzold takes readers on a journey from Morse code and Braille to the inner workings of modern computers. Building up from simple concepts like flashlights and telegraphs, he reveals how computers actually work at the most fundamental level.

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Jim's Review

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How does a computer actually work? Not the hand-wavy "ones and zeros" explanation — the real, from-the-ground-up truth. Petzold starts with flashlights and builds all the way to operating systems, and every single step is easy to follow. This is the kind of book that makes you feel smarter just for having burrowed through it. The updated second edition is even better. Five worms for the best "how computers work" book ever written.

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