One of the more advanced and interesting concepts I found in
this chapter was logic gates. AND, OR,
XOR, and NOT, are only a few of the basic building blocks for CPU logic. I was very intrigued by the whole idea, so
that is what I decided to write about. The data transformations that occur with
these gates can be confusing if you don’t understand them, so I found a site
that explains with the use of animations. Unfortunately it only seems to work
in Internet Explorer (Boo! Sorry Firefox users. I don’t know about Chrome or
Opera- but it wouldn’t work in Firefox.) This site has truth tables that tell
you what the output would be for which inputs and gates, and it even has a half
adder, a full adder, and a Flip-Flop (Not the kind you wear on your feet!). You
can find this website at http://isweb.redwoods.cc.ca.us/instruct/calderwoodd/diglogic/index.htm
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