Crossword

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Across
  1. 3. A set of programs which governs smooth operation of the computer system
  2. 5. Software which helps us to detect, remove virus from our computer system and also prevent our system from being getting infected or attacked by Virus.
  3. 6. Operating system which allows only a single user to work on a computer system effectively
  4. 7. An electronic device that takes an input, processes it and gives an output.
Down
  1. 1. Software which can be distributed freely and used by everyone free of cost
  2. 2. Primary memory of computer
  3. 4. The physical components of computer system which we can touch and feel
  4. 8. Software which enables us to run necessary hardware to execute the movie