Taken from a series which looks at the different forms of non-verbal communication, this book deals with codes and ciphers. This series has been specially designed to meet the needs of cross-curricular project work within the framework of the National Curriculum, and should be of use as a resource for children's topic work on communications. This book explains and deciphers many of the codes in current use: bar codes; chemical symbols; the Dewey decimal system; semaphore; morse code; international flag code; ordinance survey and weather map codes. The author also describes how codes and ciphers are an important way of transmitting secret information.
- ISBN10 1852108584
- ISBN13 9781852108588
- Publish Date 31 March 1990
- Publish Status Out of Print
- Out of Print 21 April 2005
- Publish Country GB
- Publisher Hachette Children's Group
- Imprint Hodder Wayland
- Format Hardcover
- Pages 32
- Language English