掌握计算机基本操作。
操作系统应该作为一项供应用程序使用的基本资源，来提供给计算机，它要尽可能的做到复杂性低，抽象性低，开销小。
The operating system should supply the computer as a basic resource to the running application's', with as little complication, abstraction and overhead as possible.
同样重要的是，它有一个基本的了解用户的计算机操作系统。
It is also important that the user have a basic understanding of the computer's operating system.
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