The answer the teacher ask about cpu hard access?

livenicely

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Three questions from univeristy professor that i have answered tomorrow?
1 = Why a byte is consist of 8 bit? No 7 bits not 5 bits or etc.
2 = i have a lot of time. time is ot a problem for me . so it is not problem that hard disk is slow . question is that why i cant change data directly on the hard disk? Why it is need to load it in ram? Why data cant be modify directly on the hard disk?
3 = even you delete history temp files and cookie . But i can tell you what u do on computer even the key strokes and the click times? Where this file or log is in computer system?
 

livenicely

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Sep 8, 2011
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18,510


may be data can be modify directly on the hard. He just create tension ? So is it possible to modify data as a MS word file directly on the ram?