For All Practical Purposes. Chapter 17: Information Science Lesson Plan. Binary Codes Encoding with Parity-Check Sums Cryptography Web Searches and Mathematical Logic. Mathematical Literacy in Today’s World, 7th ed. 1. © 2006, W.H. Freeman and Company.
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Mathematical Literacy in Today’s World, 7th ed.
© 2006, W.H. Freeman and Company
Binary Code – A system for coding data made up of two states (or symbols).
For this example we can have:
25 = 2 × 2 × 2 × 2 × 2 = 32 possible binary strings.
Cryptology – The study of how to make and break secret codes.
Three Types of Cryptosystems:
A widely used frequency table for letters in normal English usage.
Here are some other helpful tips to know when solving cryptograms:
AND conjunction ^, means to find the results with all of the words.
OR disjunction v, means to find the results of at least one of the words.
NOT ¬,means to find the results without the words.