以及基于所述车辆驾驶员是否是所述主驾驶员和所述副驾驶员中的至少一个来选择性地控制所述生成位置通知信号的运转。

The controller is adapted to selectively control the operation of generating the position notification signals based on whether the driver is the primary driver or the secondary driver.

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当事件发生时，与这个事件对应的对象发出信号，通知主循环事件已经发生。

When an event occurs, the object associated with that event emits a signal to inform the main loop that it has occurred.

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而为了使其变成拉动式系统，还需要一种机制来使下游工序以某种信号通知上游工序开始工作。

To make this a pull system, it needs a mechanism allowing the downstream process to somehow signal the upstream process to start working.

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Now this is a rain gauge, and it's sitting on a roof of a building, and when the water falls into this gauge, it sends a signal to the logic unit of the computer, which immediately notifies the memory bank of the computer to seek out its instructions for a rainy day.

这是一个雨量测量器，安装在一个楼房的,屋顶上，当水流入到这个测量器，它就给计算机的逻辑部件发送一个信号，计算机立即通知内存条,为下雨天找出相应的指令。

哈佛公开课 - 计算机科学课程节选