This circuitry shifts the carrier wave to a higher frequency when it wants to send a 1 or to a lower frequency when it wants to send a 0.

当该电路要发送 1 时，它会将载波移至更高频率；当该电路要发送 0 时，它会将载波移至更低频率。

Note that the comparison to a traffic light which emits one color and then another is a little inaccurate because your smartphone's circuitry generates one frequency, called a carrier wave.

请注意， 与发出一然后发出另一的交通信号灯的比较有点不准确， 因为智能手机的电路会产生一频率，称为载波。