By: Collins

$14.99
 
 
ISBN
9780007228041
Date Released
Binding
Paperback
Pages
192
Dimensions
82 x 117mm

Out of Print

eBook
$7.99
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Description
Information
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:
• 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
• Development of code-breaking devices such as the Enigma machine.
ISBN:
9780007228041
Publication Date:
27 / 09 / 2006
Pages:
192
Dimensions:
82 x 117mm

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