comp arch

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Across
  1. 2. disc read with a blue-violet laser
  2. 5. a computer's or TV's signal onto a big screen
  3. 7. bytes
  4. 8. storage read by bouncing a laser off patterns on the disc
  5. 10. device you roll with your fingers; suits people with wrist strain
  6. 11. payment made by holding the card within a few cm of the terminal
  7. 12. device for face-to-face conferencing without travelling
Down
  1. 1. place the CPU looks for data; a "hit" here saves a trip to RAM
  2. 3. device used to type commands into a CLI
  3. 4. storage that keeps data as tiny magnetised dots
  4. 6. type where you pass through every file in order to reach yours
  5. 9. of RAM and cache: data is lost when power is cut