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Full Description
Explore the history of codes from The Haircut Code, used by the Persians to convey messages in war, to Ancient Hebrew ciphers, pictorial codes of the Egyptians Mayans to letter codes in ancient Rome and substitution ciphers used in Tudor England when the execution of Mary, Queen of Scots was being planned. Find out about modern-day codes, such as tennis players Laura Robson and Heather Watson's 'back slang' when playing doubles and computer codes in the 21st century including the safety of passwords.The title will feature strange-but-true facts that are real-life extraordinary stories of codes and their code breakers and 'Code Cracker' practical activities show how you can build or solve your own codes!
Contents
12: Picture Codes3: Invisible Messages4: Gnitirw Sdrawkcab and other Letter Codes5: Think of a number...6: Help! My Code has been Cracked!7: The Unbreakable Code8: I Don't Understand a Word You're Saying!9: The Most Useful Code Ever Invented10: The Analytical Engine11: The Enigma Machine12: Colossus - The Computer as big as a Room13: To Infinity - and Beyond...
