Crossword Puzzle

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Across
  1. 2. Communication lines to carry data or instructions
  2. 3. Used to count external CLK pulse
  3. 4. Used to count internal CLK pulse
  4. 5. Software or hardware disruption in execution of program
  5. 8. Memory to store data
Down
  1. 1. Register required for every logical and arithmetic operations
  2. 6. Memory to store program
  3. 7. Register affected after every logical and arithmetic operations