>>>> Not compared to modern RAM circuits. I think transistors are getting 
>>>> down to the dozens-of-atoms size at this point.
>>>
>>> I doubt it.
>>
>> What do you doubt, that silicon atoms are as big as 0.25 nm across, or 
>> transistors are as small as 25 nm?
>
> If you made a transistor that consisted of only a few atoms, it wouldn't 
> work properly.

Probably not, but nobody suggested that.

Darren said that the *size* was comparable to some dozens of atoms.  A 25 nm 
transistor is only 8 dozen atoms across, but (if you assume it's a cube) it 
consists of almost a million atoms.

Clearly that's enough to still work ok, but you're right, the limit for 
traditional transistors can't be much further away.

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