Vocabulary crossword puzzle

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Across
  1. 3. A small handheld device that is dragged across a flat surface to move the cursor on a computer screen.
  2. 6. : A working surface.
  3. 7. flash drive: An external flash drive, small enough to carry on a key ring.
  4. 11. system: Software that supports a computer's basic functions.
  5. 12. copy (data) from one computer system to another, typically over the Internet.
  6. 15. : device used for observing.
  7. 17. almost or nearly as described, but not completely or according to strict definition.
  8. 19. a computer or computer program that manages access to a centralized resource or service in a network.
  9. 20. : a combined device for modulation and demodulation, for example, between the digital data of a computer and the analog signal of a telephone line.
  10. 21. a folder or box for holding loose papers that are typically arranged in a particular order for easy reference.
  11. 23. send the same message indiscriminately to (large numbers of recipients) on the Internet.
Down
  1. 1. A small text file (up to 4KB) created by a website that is stored in the user's computer either temporarily for that session only or permanently on the hard disk (persistent cookie).
  2. 2. : an act or instance of booting a computer system again.
  3. 4. : An electronic device for storing and processing data.
  4. 5. A panel of keys that operate a computer or typewriter.
  5. 8. a system designed to prevent unauthorized access to or from a private network.
  6. 9. : A global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
  7. 10. : a tool for displaying related resources under the server or network hardware devices, and allows users to interact with the hardware.
  8. 13. wide web: An information system on the Internet that allows documents to be connected to other documents by hypertext links, enabling the user to search for information by moving from one document to another.
  9. 14. (of a machine, system, or software) fail suddenly.
  10. 16. a piece of code that is capable of copying itself and typically has a detrimental effect, such as corrupting the system or destroying data.
  11. 18. A symbol or graphic representation on a screen of a program.
  12. 22. : the brains of the computer where most calculations take place.