Collins Gem Codes & Ciphers: Making Them and Breaking Them

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9780007228041: Collins Gem Codes & Ciphers: Making Them and Breaking Them

This title provides all you need to know about making and breaking codes. "Gem Codes and Ciphers" touches on everything from the smoke signals used by Native American Indians to encryption devices used by government agencies and the military. Not only does this handy, pocket-sized book cover the history of the development of codes and ciphers, it also has practical information and advice on how to make codes and, more importantly, how to break them! Topics covered are: Native American smoke signals, Masonic signals, flags, and semaphore; morse code, Braille, ASCII computer language; letter substitution - mono- and poly-alphabetic; computer algorithms; codes and ciphers throughout history; and development of code-breaking devices, such as the Enigma machine.

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Published by HarperCollins UK (2006)
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Book Description HarperCollins UK, 2006. Book Condition: Good. Ships from the UK. Former Library book. Shows some signs of wear, and may have some markings on the inside. Bookseller Inventory # GRP79586295

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Book Description HarperCollins UK, 2006. Paperback. Book Condition: Good. Ships with Tracking Number! INTERNATIONAL WORLDWIDE Shipping available. May not contain Access Codes or Supplements. Buy with confidence, excellent customer service!. Bookseller Inventory # 000722804X

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Book Description HarperCollins UK. Paperback. Book Condition: VERY GOOD. Light rubbing wear to cover, spine and page edges. Very minimal writing or notations in margins not affecting the text. Possible clean ex-library copy, with their stickers and or stamp(s). Bookseller Inventory # 2777872437

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