review brett

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Across
  1. 3. roman system
  2. 4. made by grace hopper
  3. 5. used punch cards to outline patterns
  4. 7. cavemen system
  5. 8. interlocking gears
  6. 10. name of ada lovelace's engine
Down
  1. 1. improved the census
  2. 2. built ahead of its time
  3. 6. built in 1944
  4. 9. 2600 bc