This paper gives a brief description of the design principles of a PCM multiplex terminal for fibre-optic communication, namely, speech channel, timing, synchronization, coding decoding and format.

本文扼要的介绍了脉冲编码传输设备的原理，其中包括有话路、定时、同步、编译码和帧结构。

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The composing and working principle of automotive central door lock system are introduced here as well as its wireless coding, decoding and the realizing way of the single-chip micro program control.

介绍汽车中央门锁系统的组成、工作原理，阐述无线编码、解码和单片机微程序控制的实现方法。

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Analyzing the automobile carrier communication system from the communication point, including signal coding, decoding, modulating and demodulating and the receiver strategy.

从通信系统的角度分析了汽车载波通信系统应该采取的策略，包括有信号的编码、解码，调制、解调，及接收端策略。

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