関連ワード:  function of computer for class 3    use of computer for class 3    use of computer in airport for class 3    use of computer in bank for class 3    use of computer in hospital for class 3    write the use of computer for class 3    use of computer in school for class 3    what is computer for class 3    what is a computer system for class 3    how does a computer work for class 3