Computer Crossword puzzle

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Across
  1. 3. executes instructions
  2. 5. type of compact disk
  3. 7. circuit board components are connected to
  4. 8. device for modulation and demodulation
  5. 9. physical components of the computer
Down
  1. 1. slotted into a computer to allow the use of audio
  2. 2. a personal computer
  3. 4. a global computer network
  4. 6. instructions that tell a computer what to do
  5. 10. computer memory that can be read and changed