Crossword Puzzle about 1-4 lectures ICT

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Across
  1. 2. system is an abstraction providing data structure on the drive
  2. 5. an extremaly fast computer
  3. 8. brain of computer.
  4. 10. performed functions similar to vacuum tubes but they were smaller, cheaper, and more reliable
  5. 11. the first calculating device that was used in China
Down
  1. 1. is software that manages computer hardware and software resources and provides common services for computer programs.
  2. 3. is allows communication and power to flow throughout the computer system.
  3. 4. is an act of transmitting messages
  4. 6. is a scientific discipline, which studies the complex human functional capabilities in labor and domestic processes.
  5. 7. electronic machine that performs input, processing, storing, and output operations according to programmed instructions to carry out specific tasks
  6. 9. a set of commands that performs a specific task on the computer.