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3- LeBlanc, Brandon. "A closer look at the Windows 7 SKUs". Windows Team Blog. Microsoft, 2009.

4- Forouzan, Behrouz A. "Introduction to cryptography and network security". 2008.

5- Computing Fundamentals, Innovative Training Works USA, Inc, 2006.

6- Ron white and timothy downs. How computer work. 9•h ed., 2007 7- Michael Miller, Absolute Beginner's Guide to Computer Basic, 5'"

ed., 2009. 8- John Wiley & Sons, Inc, "Handbook of information security", vol.

2. 2006. 9- Computer Literacy BASICS: A Comprehensive Guide to IC3 by

Connie Morrison and Dolores Wells ( 2012) 10- My Parents Second Computer and Internet Guide, Beyond the

Basics by Louise Latremouille and Dave Henry (Dec I, 2012

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