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Across
  1. 2. private network: extends a private network across a public network and enables users to send and receive data across shared or public networks.
  2. 4. unit:  the enclosure that contains most of the components of a personal computer.
  3. 9. model: is a reference model for how applications communicate over a network.
  4. 10. the physical parts of a computer
  5. 12. processing unit: main processor or just processor, is the electronic circuitry that executes instructions comprising a computer program.
  6. 13. is a person who utilizes a computer or network service.
  7. 14. area network:  a computer network that interconnects computers within a limited area such as a residence, school, laboratory, university campus or office building.
  8. 15. card: a circuit board that can be inserted in a computer to give extra facilities or memory.
  9. 16. interface:  processes commands to a computer program in the form of lines of text.
  10. 21. computer: a large high-speed computer, especially one supporting numerous workstations or peripherals
  11. 23. storage device: is the recording of information in a storage medium.
  12. 26. an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.
  13. 28. a particularly powerful mainframe computer.
  14. 29. the retention of retrievable data on a computer or other electronic system; memory.
  15. 30. drive: an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage.
  16. 31. are individual facts, statistics, or items of information, often numeric.
Down
  1. 1. the collection and manipulation of items of data to produce meaningful information.
  2. 3. device:  a piece of equipment used to provide data and control signals to an information processing system
  3. 5. a small computer that contains a microprocessor as its central processor
  4. 6. extension:  is an identifier specified as a suffix to the name of a computer file.
  5. 7. a collection of instructions that tell a computer how to work.
  6. 8. a peripheral device.
  7. 11. access memory: is a form of computer memory that can be read and changed in any order, typically used to store working data and machine code.
  8. 17. protocol: is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity.
  9. 18. topology: the arrangement of the elements of a communication network.
  10. 19. computer: a mobile device, typically with a mobile operating system and touchscreen display processing circuitry.
  11. 20. system:  is system software that manages computer hardware, software resources, and provides common services for computer programs.
  12. 22. is the main printed circuit board in general-purpose computers and other expandable systems.
  13. 24. user interface (GUI):  is a form of user interface that allows users to interact with electronic devices through graphical icons and audio indicator such as primary notation.
  14. 25. is a piece of computer hardware or software that provides functionality for other programs or devices, called "clients"
  15. 27. supply:  an electrical device that supplies electric power to an electrical load.
  16. 30. sink: is a passive heat exchanger that transfers the heat generated by an electronic or a mechanical device to a fluid medium.