crossword puzzle input ouput process

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Across
  1. 3. a rigid nonremovable magnetic disk with a large data storage capacity.
  2. 6. This is an input device which is used to draw lines or figures on a computer screen. It’s touched to the CRT screen where it can detect raster on the screen as it passes.
  3. 11. is an electronic device that can read and output printed barcodes to a computer.
  4. 12. is similar to the upside- down design of the mouse. The user moves the ball directly, while the device itself remains stationary. The user spins the ball in various directions to effect the screen movements.
  5. 16. A computer monitor is an output device that displays information in pictorial form.
  6. 17. make a calculation, especially using a computer.
  7. 19. relating to, using, or expressed in a system of numerical notation that has 2 rather than 10 as a base.
  8. 20. an integrated circuit that contains all the functions of a central processing unit of a computer
  9. 22. a panel of keys that operate a computer or typewriter.
  10. 23. A device that converts analog audio signals into the equivalent air vibrations in order to make audible sound.
  11. 27. a pair of earphones joined by a band placed over the head, for listening to audio signals such as music or speech.
  12. 28. used as a read-only optical memory device for a computer system.
  13. 30. an electronic device for storing and processing data, typically in binary form, according to instructions given to it in a variable program.
  14. 31. what is put in, taken in, or operated on by any process or system.
  15. 32. determine (the amount or number of something) mathematically.
Down
  1. 1. is an optical disc format designed to display high definition video and store large amounts of data.
  2. 2. a small piece, part, or quantity of something.
  3. 4. facts and statistics collected together for reference or analysis.
  4. 5. a global computer network providing a variety of information and communication facilities, consisting of interconnected networks using standardized communication protocols.
  5. 7. a unit of information equal to one million million (1012) or, strictly, 240 bytes.
  6. 8. a high-capacity, self-contained storage device containing a read-write mechanism plus one or more hard disks, inside a sealed unit. Also called hard disk drive.
  7. 9. a flexible removable magnetic disk, typically encased in hard plastic, used for storing data.
  8. 10. an instrument for converting sound waves into electrical energy variations which may then be amplified, transmitted, or recorded.
  9. 13. a printed circuit board containing the principal components of a computer or other device, with connectors into which other circuit boards can be slotted.
  10. 14. a device for recording visual images in the form of photographs, film, or video signals
  11. 15. Scanners are used to enter information directly in to the computers memory. This device works like a Xerox machine. The scanner converts any type of printed or written information including photographs into digital pulses, which can be manipulated by the computer.
  12. 18. a display device which allows the user to interact with a computer by touching areas on the screen.
  13. 21. (liquid crystal display) is the technology used for displays in notebook and other smaller computers.
  14. 24. changeable; inconstant.
  15. 25. abbreviation for light-emitting diode:
  16. 26. a machine for printing text or pictures onto paper, especially one linked to a computer.
  17. 29. a small handheld device that is dragged across a flat surface to move the cursor on a computer screen, typically having buttons that are pressed to control functions.
  18. 30. a compact disc used as a read-only optical memory device for a computer system.