"WHAT'S IS THE HIDDEN WORDS?"

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Across
  1. 1. to use machines and computers instead of people to do a job or task.
  2. 4. make changes i something established, especially by introducing new methods, ideas or product.
  3. 6. a portable computer that can work with a battery.
  4. 7. an international computer network connecting other networks and computers that allows people to share information around the world
Down
  1. 2. a person who is enthusiastic about advanced equipments or devices.
  2. 3. a formal discussion on a particular topic in a public meeting or legislative assembly, in which opposing arguments are put forward.
  3. 5. an often small mechanical or electronic device which does something useful.