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•• (a) If information can be stored in the placement of individual atoms of a solid, what information density (in bits per cm3) is possible? Recall that in most solids, each atom takes up a volume of about (0.3 nm)3. (b) How large a volume is required to store 1 gigabit? 1 terabit? 1 gigaterabit = 1021 bits?
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