However, you may not have taken the time to think about how they might be implemented in your operating system.
不过，您可能没有用一些时间去思考它们在您的操作系统中是如何实现的。
With this device, you can learn how one of the oldest operating signals of sample time is made and how it works.
通过这个设备，你能够学到最古老的运行的信号之一的抽样时间是如何做到的以及它是如何工作的。
With EC2, customers create their own Amazon Machine Images (AMIs) containing an operating system, applications, and data, and they control how many instances of each AMI run at any given time.
使用 EC2，客户可以创建自己的 Amazon Machine Images (AMI)，包括操作系统、应用程序和数据，并控制在给定的时候每个 AMI 有多少实例运行。
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