Quote:
Originally Posted by pmrid
The 1980s era computers on Hubble have always mystified me. Given the several repair and replace processes undertaken over the past decade or so, I would have thought that the clever folk at NASA would have thought to replace these old systems with some new ones. Is it a question of compatibility? Perhaps the old chips are more resilient or better able to handle the space environment. It would be interesting to know.
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Don't quote me but I think that the CPUs can't be
anything above an 80486 as the large transistor size of that old
CPU chip is resistant to cosmic rays.
The latest CPUs wouldn't last an hour with their tiny 7nm sizes.