computer fundamentals

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Across
  1. 2. of memory that is volatile (3 letters)
  2. 4. system known for its graphical interface (6 letters)
  3. 6. device used to scan documents (7 letters)
  4. 7. used to display text and graphics (7 letters)
  5. 8. device popularly used for transferring files (6 letters)
Down
  1. 1. used to input text and commands (8 letters)
  2. 2. brain of the computer (4 letters)
  3. 3. of memory that is non-volatile (3 letters)
  4. 4. device for producing hard copies of documents (7 letters)
  5. 5. of storage device that uses magnetic disks (4 letters)