1855: The Industrial Revolution is in full and inexorable swing, powered by steam-driven cybernetic Engines. Charles Babbage perfects his Analytical Engine and the computer age arrives a century ahead of its time. And three extraordinary characters race toward a rendezvous with history—and the future: Sybil Gerard—a fallen woman, politician’s tart, daughter of a Luddite agitator Edward “Leviathan” Mallory—explorer and paleontologist Laurence Oliphant—diplomat, mystic, and spy. Their adventure begins with the discovery of a box of punched Engine cards of unknown origin and purpose. Cards someone wants badly enough to kill for…. Part detective story, part historical thriller, The Difference Engine is the collaborative masterpiece by two of the most acclaimed science fiction authors writing today. Provocative, compelling, intensely imagined, it is a startling extension of Gibson’s and Sterling’s unique visions—and the beginning of movement we know today as “steampunk!”

"Drawing on previously unused archival material, The Difference Engine is a tale of both Babbage's nineteenth-century quest to build a calculating engine and its twentieth-century sequel. For in 1991, Babbage's vision was finally realized, at least in part, by the completion at the Science Museum in London of the first full-sized Babbage engine, finished in time for the 200th anniversary of Babbage's birth. The two quests are mutually illuminating and are recounted here by the then Curator of Computing, Doron Swade - one of the main protagonists of the successful resumption of Babbage's extraordinary work."--BOOK JACKET.

“The ferociously talented Gibson delivers his signature mélange of technopop splendor and post-industrial squalor” (Time) in this New York Times bestseller that features his hero from Idoru... Colin Laney, sensitive to patterns of information like no one else on earth, currently resides in a cardboard box in Tokyo. His body shakes with fever dreams, but his mind roams free as always, and he knows something is about to happen. Not in Tokyo; he will not see this thing himself. Something is about to happen in San Francisco. The mists make it easy to hide, if hiding is what you want, and even at the best of times reality there seems to shift. A gray man moves elegantly through the mists, leaving bodies in his wake, so that a tide of absences alerts Laney to his presence. A boy named Silencio does not speak, but flies through webs of cyber-information in search of the one object that has seized his imagination. And Rei Toi, the Japanese Idoru, continues her study of all things human. She herself is not human, not quite, but she’s working on it. And in the mists of San Francisco, at this rare moment in history, who is to say what is or is not impossible...

"Ada, Countess of Lovelace and daughter of Romantic poet Lord Byron, is sometimes referred to as the world's first computer programmer. But how did a young woman in the nineteenth century without a formal education become a pioneer of computer science? Drawing on previously unpublished archival material, including a remarkable correspondence course with eminent mathematician Augustus De Morgan, this book explores Ada Lovelace's development from her precocious childhood into a gifted, perceptive and knowledgeable mathematician who, alongside Mary Somerville, Michael Faraday and Charles Dickens, became part of Victorian London's social and scientific elite. Featuring images of the 'first programme' together with mathematical models and contemporary illustrations, the authors show how, despite her relatively short life and with astonishing prescience, Ada Lovelace explored key mathematical questions to understand the principles behind modern computing."--Page 4 de la couverture.

1855: The Industrial Revolution is in full and inexorable swing, powered by steam-driven cybernetic Engines. Charles Babbage perfects his Analytical Engine and the computer age arrives a century ahead of its time. And three extraordinary characters race toward a rendezvous with history—and the future: Sybil Gerard—a fallen woman, politician’s tart, daughter of a Luddite agitator Edward “Leviathan” Mallory—explorer and paleontologist Laurence Oliphant—diplomat, mystic, and spy. Their adventure begins with the discovery of a box of punched Engine cards of unknown origin and purpose. Cards someone wants badly enough to kill for…. Part detective story, part historical thriller, The Difference Engine is the collaborative masterpiece by two of the most acclaimed science fiction authors writing today. Provocative, compelling, intensely imagined, it is a startling extension of Gibson’s and Sterling’s unique visions—and the beginning of movement we know today as “steampunk!” From the Paperback edition.