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Product Description
Crossing over into general-interest non-fiction from his popular programming manuals, Charles Petzold has written Code: The Hidden Language of Computer Hardware and Software. It's a carefully written, carefully researched gem that will appeal to anyone who wants to understand computer technology at its most essential levels. Readers learn about number systems(decimal, octal, binary and all that) through Petzold's patient (and frequently entertaining) prose, then discover the logical systems that are used to process them. There's loads of historical information, too. From Louis Braille's development of his eponymous raised-dot code to Intel Corporation's release of its early microprocessors, Petzold presents the stories of people trying to find ways to communicate with (and by means of) mechanical and electrical devices. It's a fascinating progression of technologies and the author presents a clear statement of how they fit together.
The real value of Code is in its explanations of technologies that have been obscured for years behind fancy user interfaces and programming environments that, in the name of rapid application development, insulate the programmer from the machine. In a section on machine language, Petzold dissects the instruction sets of the genre-defining Intel 8080 and Motorola6800 processors. He walks the reader through the process of performing various operations with each chip, explaining which op codes poke which values into which registers along the way. Petzold knows that the hidden language of computers exhibits real beauty. In Code, he helps his readers appreciate it. --David Wall
Topics covered: Mechanical and electrical representations of words and numbers, number systems, logic gates, performing mathematical operations with logic gates, microprocessors, machine code, memory and programming languages.
--This text refers to an out of print or unavailable edition of this title.
Product Description
Paperback Edition What do flashlights, the British invasion, black cats, and seesaws have to do with computers? In CODE, they show us the ingenious ways we manipulate language and invent new means of communicating with each other. And through CODE, we see how this ingenuity and our very human compulsion to communicate have driven the technological innovations of the past two centuries. Using everyday objects and familiar language systems such as Braille and Morse code, author Charles Petzold weaves an illuminating narrative for anyone who’s ever wondered about the secret inner life of computers and other smart machines. It’s a cleverly illustrated and eminently comprehensible story—and along the way, you’ll discover you’ve gained a real context for understanding today’s world of PCs, digital media, and the Internet. No matter what your level of technical savvy, CODE will charm you—and perhaps even awaken the technophile within.
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