Crossword for relaxation

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Across
  1. 3. / Overcrowding
  2. 4. / Battery part
  3. 5. / Interlinked group
  4. 8. / Pierced with holes
  5. 10. / An integrated circuit that contains all the functions of a central processing unit of a computer
  6. 14. / Able to be maintained
  7. 15. / Arousing one's curiosity or interest
  8. 16. / The effective center of network
  9. 17. / Fusing metals
  10. 20. / Skill of being able to find correct way to place
  11. 22. / Narrow track
  12. 24. / Communications device
  13. 25. / A statistic characterizing human populations
  14. 26. / First model of something
  15. 27. / Points of connection
  16. 28. / Set up a computer
Down
  1. 1. / Sudden important success or discovery
  2. 2. / Predicting
  3. 4. / A usual or ordinary thing
  4. 6. / A board for making an experimental model of an electric circuit
  5. 7. / The part of a network that connects other networks together
  6. 9. / To become worse
  7. 11. / The property of being connected
  8. 12. / Something bought for later profit
  9. 13. / Steep, rapid fall
  10. 14. / Single thread
  11. 18. / Any nonverbal action or gesture that encodes a message
  12. 19. / Opposite of success
  13. 21. / Not controlled by outside forces
  14. 23. / Set used to broadcast radio or tv signals