関連ワード:  two basic functions of operating system    two main functions of operating system    two primary functions of operating system    write two main functions of operating system    two key functions of an operating system    list any two basic function of operating system software    state two basic functions of an operating system excluding task performed by utilities    write any two principal functions of operating system    two functions of operating system    two functions of operating system software  
結果 : two basic functions of operating system