Computers Book
http://www.darknet.org.uk/2006/03/how-computers-work-free-e-book/
This is a well written book for people without knowledge of basic
electronics to become hardware hackers.
But will be useful for those who know as well.
Best
A. Mani
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A. Mani
ASL, CLC, AMS, CMS
http://amani.topcities.com
http://www.logicamani.co.cc