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本文介绍用单片机实现脉码调制频移键控信号（PCM—ASK）的方法，给出硬件和软件配置，其特点是简单、可靠、精确，适合用于传输水声信息。
In this paper, the method of pulse-code modulated frequency-shift keying signal (PCM-ASK) using single chip microcomputer is introduced. The hardware and software configuration are given. The method is simple, reliable and accurate and suitable for transmitting underwater acoustic information.