Pulse amplitude modulation (PAM) is one form of the ways, in which it is widely used in the system of communication and control.

脉冲幅度调制波（PAM）是脉冲调制的一种形式，在通信和控制系统中得到广泛应用。

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It is a key problem to detect the ultrashort pulse in optical communication system.

在光纤通信系统中，超短光脉冲的检测一直是一个重要的问题。

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These functions are realized by the circuits of power, clock, memory, ultrasonic pulse signal occurs and handle, temperature gathered and serial communication in system.

这些功能的实现是通过系统中电控部分的电源、时钟、存储、超声波脉冲信号发生、处理、温度采集、串行通信电路实现的。

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