Acronyms in a computer science

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Across
  1. 4. the unit of mesaurement of trasmission speed
  2. 6. the Digital Disc for video
  3. 8. the flow memory of Personal Computer
  4. 9. the serial port of Personal computer
  5. 11. the interface graphics of Personal Computer
  6. 12. the memory that is read-only
Down
  1. 1. mass storage of Personal computer
  2. 2. the core of Personal Computer
  3. 3. the software used for technical drawing
  4. 5. the net used in the office and at school
  5. 7. the component of CPU that performs logical
  6. 10. the fondamental unit of imformation