Wellknown inventions: telephone and laptop

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Across
  1. 3. The power source that allows a laptop to operate without direct electricity.
  2. 4. The central unit that performs calculations and controls laptop operations.
  3. 8. A space-based technology that enables global telephone communication.
  4. 9. The built-in camera in laptops used for video communication.
  5. 11. The device that converts sound waves into electrical signals in a telephone.
  6. 14. The global network that enables communication and data exchange through laptops and phones.
  7. 15. The early mechanical system used to enter phone numbers on traditional telephones.
Down
  1. 1. The primary text-input device used in laptops.
  2. 2. A portable personal computer designed for mobile use.
  3. 5. The component that transforms electrical signals back into sound.
  4. 6. The invention that revolutionized long-distance voice communication in the nineteenth century.
  5. 7. The visual display component of a laptop.
  6. 10. A tiny integrated circuit that forms the technological foundation of laptops.
  7. 12. The electrical or digital transmission that carries voice data in a telephone system.
  8. 13. The scientist and inventor who is widely credited with inventing the telephone.