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Break the Code: Cryptography for Beginners (Dov, Johnson*.
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所在地：NY, 美國
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估計於 6月8日, 六至 6月15日, 六之間送達 運送地點 43230
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- ISBN
- 9780486291468
- EAN
- 9780486291468
- Publication Year
- 2013
- Format
- Trade Paperback
- Language
- English
- Book Title
- Break the Code : Cryptography for Beginners
- Item Length
- 11in
- Publisher
- Dover Publications, Incorporated
- Genre
- Language Arts & Disciplines, Juvenile Nonfiction
- Topic
- Games & Activities / Word Games, Communication Studies, Games & Activities / Puzzles, Games & Activities / General
- Item Width
- 8.2in
- Item Weight
- 9.5 Oz
- Number of Pages
- 80 Pages
關於產品
Product Information
No, it's not a message from outer space! Just read it backwards, starting from the bottom line, to discover what this specially coded message says. (The extra letter "X" at the beginning was thrown in just to make the message a bit more mysterious.) Codes have been used for centuries. Now, with the help of this entertaining book, you, too, will be able to decipher dozens of secret messages. Veteran cryptographer Bud Johnson not only describes the different techniques used in secret writing but also explains -- clearly and simply -- how to make and break six different kinds of codes: simple letter grouping, reverse trail, shift code, key word code, date shift code, and twisted path code. You'll even learn techniques for creating your own confidential messages! Cartoons by illustrator Larry Daste accompany the 51 practice messages, along with easy-to-follow instructions explaining each type of code and how to use it. There's also a glossary defining common terms used by cryptographers, a sheet of reproducible graph paper for writing out messages, and a page of ready-made alphabets for shift and key word codes. And if all those funny drawings and helpful guidelines aren't enough to help you decode our secret messages, don't worry. Solutions are included at the end of the book.
Product Identifiers
Publisher
Dover Publications, Incorporated
ISBN-10
0486291464
ISBN-13
9780486291468
eBay Product ID (ePID)
810689
Product Key Features
Book Title
Break the Code : Cryptography for Beginners
Format
Trade Paperback
Language
English
Topic
Games & Activities / Word Games, Communication Studies, Games & Activities / Puzzles, Games & Activities / General
Publication Year
2013
Genre
Language Arts & Disciplines, Juvenile Nonfiction
Number of Pages
80 Pages
Dimensions
Item Length
11in
Item Width
8.2in
Item Weight
9.5 Oz
Additional Product Features
Lc Classification Number
Z103.J65 1997
Grade from
Third Grade
Grade to
Twelfth Grade
Copyright Date
1997
Lccn
97-019323
Dewey Decimal
652/.8
Intended Audience
Juvenile Audience
Series
Dover Kids Activity Bks.
Dewey Edition
21
Illustrated
Yes
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商業賣家資料
增值稅識別編號：
- GB 724498118
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物品所在地：
NY, 美國
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全球
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