Codes and Ciphers

Name: Codes and Ciphers
Price: 4.86 USD
Availability: InStock
ISBN: 9780061374074

ISBN-10: 0061374075

ISBN-13: 9780061374074

Edition: N/A

Authors: Sean Callery

List price: $16.95

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Description:

Everything from smoke signals to military encryption devices Codes and Ciphers reveals the development and role of secret communications throughout history and offers practical advice on how to make codes (whether by pencil and paper or by computer) and how to break them! Inside you will find information on: Code-breaking devices Hieroglyphics, Native American smoke signals, flags, and semaphore Braille, Morse code, and computer language Mono- and polyalphabetic letter substitution Computer algorithms

Book details

List price: $16.95
Publisher: HarperCollins Publishers
Publication date: 1/22/2008
Binding: Paperback
Pages: 192
Size: 5.75" wide x 8.25" long x 0.50" tall
Weight: 0.880
Language: English

Sean Calleryis a writer and primary-school teacher. He has written a number of information books for publishers such as HarperCollins and Which?, as well as musicals and educational articles.