UNIT 4 "OPERATING SYSTEMS", Crossword

12345678910111213141516171819202122
Across
  1. 1. You need this to access a computer.
  2. 3. Happy with a product or service.
  3. 4. A completely new product.
  4. 5. To give technical help.
  5. 7. The instructions that make up a program.
  6. 14. The opposite of “closed source”.
  7. 17. To start a program.
  8. 18. Free software can be "gratis" or "libre".
  9. 19. How well a system works.
  10. 20. Another word for "program".
  11. 21. When you put a CD or USB into a computer.
  12. 22. To publish a new version.
Down
  1. 2. The opposite of “open source”.
  2. 6. To keep a key pressed.
  3. 8. When software is no longer produced or supported.
  4. 9. Weak to attacks or problems.
  5. 10. To improve or update a program.
  6. 11. Knowledge you get when using something.
  7. 12. A removable storage device, often called a pendrive.
  8. 13. What you do when you want to stop the computer.
  9. 15. A study with questions to collect information.
  10. 16. To re-start a computer.