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Kids' Q&A: Emily Winfield Martin

2 comments By Emily Winfield Martin

Describe your new book. Oddfellow's Orphanage is a series of stories/vignettes that tell the tale of the newest arrival to a curious orphanage, a... Continue »

$10.49 Sale Hardcover add to wish list

Oddfellow's Orphanage
Emily Winfield MartinEmily Winfield Martin 9780375869952

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Codes and Ciphers

by Sean Callery

ISBN13: 9780061374074
ISBN10: 0061374075
All Product Details

Synopses & Reviews

Publisher Comments:

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

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Product Details

ISBN:: 9780061374074
Publisher:: Harper Paperbacks
Subject:: Trivia
Author:: Callery, Sean
Author:: by Sean Callery
Subject:: Communication
Edition Description:: Trade PB
Publication Date:: January 2008
Binding:: Paperback
Language:: English
Illustrations:: Y
Pages:: 192
Dimensions:: 8.25 x 5.75 in 14.24 oz

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