NASA's Perseverance rover has a 1997 computer chip brain. Here's why.

It may be old tech, but it's super-reliable.

Credit: NASA
  • A special super-tough version of an old chip made famous by Apple is running the show on NASA's Perseverance Mars rover.
  • The chip is slow by modern standards, but meets the reliability test.
  • The chip can be bombarded with radiation and still keeps on going.
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