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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. Petzold's companion website, CodeHiddenLanguage.com, 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: Let's Build a Clock! Chapter 21: The Arithmetic Logic Unit Chapter 22: Registers and Busses Chapter 23: CPU Control Signals Chapter 24: Jumps, Loops, and Calls Chapter 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.
"The Encyclopedia of Library and Information Science provides an outstanding resource in 33 published volumes with 2 helpful indexes. This thorough reference set--written by 1300 eminent, international experts--offers librarians, information/computer scientists, bibliographers, documentalists, systems analysts, and students, convenient access to the techniques and tools of both library and information science. Impeccably researched, cross referenced, alphabetized by subject, and generously illustrated, the Encyclopedia of Library and Information Science integrates the essential theoretical and practical information accumulating in this rapidly growing field."
Taking its place beside the instant classic bestseller The Whole Earth Catalog, this new, practical, comprehensive and profusely illustrated guide will prove invaluable to all consumers looking for a quick, efficient route to the very best information. Over 1,000 black-and-white illustrations.
Marshall McLuhan died on the last day of 1980, on the doorstep of the personal computer revolution. Yet McLuhan's ideas anticipated a world of media in motion, and its impact on our lives on the dawn of the new millennium. Paul Levinson examines why McLuhan's theories about media are more important to us today than when they were first written, and why the Wired generation is now turning to McLuhan's work to understand the global village in the digital age.
In a breakthrough Organization Man for the twenty-first century, bestselling author Art Kleiner reveals that every organization is driven by a desire to satisfy a Core Group of influential individuals and explains why understanding this group’s expectations is the key to success. When corporate leaders announce, with seeming sincerity, “We make our decisions on behalf of our shareholders,” their words are taken at face value. But as recent news stories prove, this imperative is routinely violated. In Who Really Matters, Art Kleiner argues that the dissonance between a declared mission and actual operation can be seen at organizations large and small. All organizations have one motive in common. Every decision—which projects to back, who to promote, or how to spend money—is affected by the perceived wants and needs of a core group of people “who really matter.” The composition of the group can differ from organization to organization. Often, the most senior people in the hierarchy are members—but not always. Sometimes, the people who “matter” can extend far down the corporate ladder, or even reach outside the company to include key customers, labor union leaders, and stockholders. Kleiner gives readers clues about how to identify a core group’s real mission by observing its day-to-day actions, listening to the fundamental message it sends employees, examining its management of new members; understanding the ideas that shape its policies about management, money, and the way the world works; and avoiding the taboos governing the way it operates. Whether you’re a member of the Core Group—or want to be—this deft, engaging blend of argument and observation, anecdotes and advice, is the one guide you’ll need to achieve your career goals and aspirations by navigating the hidden pathways in any organization, large or small.