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来源：百度知道 编辑：UC知道 时间：2024/06/02 10:13:26
Operating systems for micro,mini,and mainframe computers perform many services These services can be classified either as "external"or "internal".
The operating system provides external services that help users start programs,manage stored data,and maintain security.You,as the computer user,control these external functions.Using a command-line,menu-driven,or GUI user interface,an operating system provides you with a way to select the programs you would like to use.The operating system also helps you find.rename,and delete document and other data stored on disk or tape.On many,but not all computer systems,the operating system helps you maintain security by checking your user ID and password,as well as protecting yourdata from unauthorize access and revisions.
The operating system provides intemal services "behind the scenes" to ensure that the computer system functions efficiently.These internal services are not generally under your contro
The operating system provides external services that help users start programs,manage stored data,and maintain security.You,as the computer user,control these external functions.Using a command-line,menu-driven,or GUI user interface,an operating system provides you with a way to select the programs you would like to use.The operating system also helps you find.rename,and delete document and other data stored on disk or tape.On many,but not all computer systems,the operating system helps you maintain security by checking your user ID and password,as well as protecting yourdata from unauthorize access and revisions.
The operating system provides intemal services "behind the scenes" to ensure that the computer system functions efficiently.These internal services are not generally under your contro
作业系统为微型，小型和大型计算机进行多种服务，这些服务可以归为“外部”或“内部” 。
作业系统提供对外服务，帮助用户启动程序，管理存储的数据，并保持security.You ，作为计算机用户，控制这些外部functions.Using一个命令行，菜单驱动，或图形用户界面，作业系统为您提供的方式选择项目要use.The作业系统还可以帮助您find.rename ，并删除的文件和其他数据存储在磁盘上或tape.On很多，但并非所有计算机系统，操作系统帮助你保持安全检查您的用户名和密码，以及保护yourdata从unauthorize访问和修改。
作业系统提供内部服务的“幕后” ，以确保计算机系统的内部职能efficiently.These服务一般不在你的控制，而是由操作系统控制itself.The操作系统控制输入和输出，所有ocates系统资源，管理storoge空间的程序和数据，并检测设备故障没有任何方向您的意见。