Bit Rot Amnesia

By Mike Deliman

Deliman_lg Spirit Rover has been having a number of problems recently, anomalous behaviors, losing contact with Earth, even forgetting commands.  Amnesia has been one of the larger concerns.

At
the heart of this issue is a bank of flash memory.  Flash pretty much
works by saturating cells to "1"s, then writing the cells that need to
be 0's.  "quantum wells" hold the charge for later recall.  Since this
is all done with minute electrical charges, one would have to wonder
how long it could last.

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