操作系统可以使用户把精力集中在自己的任务或应用软件上，而不必把精力浪费在管理计算机的复杂事物上。
The operating system allows users to concentrate on their own tasks or applications rather than on the complexities of managing the computer.
过程通知计算机操作员应用程序将要执行哪个任务，并且还显示一个时间戳。
Procedure tells the computer operator which task the application is about to perform, and also displays a time stamp.
在这个程序之前，工程师和技术人员已经进行了测试运行、计算机建模培训和在一个仪器包模型上操作的培训。这是一个关键的任务操作。
Before the procedure, the engineers and technicians had trained with test runs, computer modeling and a mock-up of the instrument package. This is a critical mission operation.
本文探讨了如何扩充个人计算机磁盘操作系统，使其能适用于实时多任务环境。
This paper discusses how to expand the system's functions of a personal computer, so as to make it suitable for the real-time multitask control environment.
任务驱动下的自主性学习是实施探究式教学的一种教学方法，它适用于学习操作类的知识和技能，尤其适用于学习计算机应用方面的知识和技能。
It adapt to learning how to operate the type of knowledge and skills, especially in the application of the knowledge and skills of computer. Concept map is an effective way for teaching and learning.
在一个单处理器计算机中，CPU一个时刻只能执行一个任务，由操作系统管理哪一个任务使用CPU。
In a single processor computer the CPU can execute one task at a time, but the Operating System manages which task should access the CPU.
第二，操作系统试图对计算机任务进行调度以确保计算机系统性能良好。
Second, operating systems attempt to schedule computational activities to ensure good performance of the computing system.
操作系统的任务是为用户程序提供一个更好、更简单、更清晰的计算机模型，管理计算机硬件设备。
The client-server model is popular in distributed systems. Can it also be used in a single-computer system?
操作系统的任务是为用户程序提供一个更好、更简单、更清晰的计算机模型，管理计算机硬件设备。
The client-server model is popular in distributed systems. Can it also be used in a single-computer system?
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