Crossword Puzzle about 1-4 lectures ICT

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